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Saturday, August 1, 2020

Professional practice of behavior analysis

From Wikipedia, the free encyclopedia
 
The professional practice of behavior analysis is one domain of behavior analysis: the others being radical behaviorism, experimental analysis of behavior and applied behavior analysis. The professional practice of behavior analysis is the delivery of interventions to consumers that are guided by the principles of behaviorism and the research of both the experimental analysis of behavior and applied behavior analysis. Professional practice seeks maximum precision to change behavior most effectively in specific instances. Behavior analysts are mental health professionals and, in some states, may hold a license, certificate or registration as a behavior analyst. In other states, there are no laws governing their practice and, as such, the practice may be prohibited as falling under the practice definition of other mental health professionals. This is rapidly changing as Behavior Analysts are becoming more and more common.

The professional practice of behavior analysis is a hybrid discipline with specific influences coming from counseling, psychology, education, special education, communication disorders, physical therapy and criminal justice. As a discipline it has its own conferences, organizations, certification processes and awards.

Defining the scope of practice

The Behavior Analysis Certification Board (BACB) defines behavior analysis as:
The field of behavior analysis grew out of the scientific study of principles of learning and behavior. It has two main branches: experimental and applied behavior analysis. The experimental analysis of behavior (EAB) is the basic science of this field and has over many decades accumulated a substantial and well-respected research literature. This literature provides the scientific foundation for applied behavior analysis (ABA), which is both an applied science that develops methods of changing behavior and a profession that provides services to meet diverse behavioral needs. Briefly, professionals in applied behavior analysis engage in the specific and comprehensive use of principles of learning, including operant and respondent learning, in order to address behavioral needs of widely varying individuals in diverse settings. Examples of these applications include: managing behavior of children in school settings; enhancing the abilities, and choices of children and adults with different kinds of disabilities; training animals; and augmenting the performance and satisfaction of employees in organizations and businesses.
As the above suggests, behavior analysis is based on the principles of operant and respondent conditioning. Applied behavior analysis (ABA) include the use of behavior management, behavioral engineering and behavior therapy. Behavior analysis is an active, environmental-based approach.

Currently in the U.S. some behavior analysts at the masters level are licensed; others work with an international certification where licenses are unavailable, although this may not be allowed in some states or jurisdictions. At the doctoral level many are licensed as psychologists with Diplomate status in behavioral psychology or licensed as licensed behavior analysts. Diplomate status alone, however, does not allow one to practice in every state and each state's regulatory statute must be reviewed for the appropriateness and legality of practice.

Certification

The Behavior Analyst Certification Board (BACB) offers a technical certificate in behavior analysis. The American Psychological Association offers a diplomate (post PhD and licensed certification) in behavioral psychology.

The meaning of certification

BACB is a private non-profit organization without governmental powers to regulate behavior analytic practice. However it does wield the power to suspend or revoke certification from those certified if they violate the strict ethical guidelines of practice. As many states are without a licensure act, this has been sufficient to deter violators as it removes their ability to vendor with the state, schools, and insurance companies under that certification. While the BACB certification means that candidates have satisfied entry-level requirements in behavior analytic training, certificants are able to practice independently within the scope of their practice and training. Thus, a BCBA (such as those who go into marketing, engineering, or other approved fields in which BCBAs work) who has never trained to work nor worked with children diagnosed with autism should not attempt to do so independently. Most health insurance companies also recognize the BCBA credential as one conferring the capability and the right to practice independently in many states (including California with the recent passage of SB 946 into law).

Some states still require certificants to be licensed by their respective jurisdictions for independent practice when treating behavioral health or medical problems, and a number of states including Arizona and Nevada have created a specific BCBA licensing program (for a full list please refer to the BACB website). Licensed certificants must operate within the scope of their license and within their areas of expertise. Where the government regulates behavior analytic services, unlicensed certificants may be supervised by a licensed professional and operate within the scope of their supervisor's license when treating disorders if that jurisdiction allows such supervision. Unlicensed certificants who provide behavior analytic training for educational or optimal performance purposes do not require licensed supervision, unless the law or precedent prohibits such practice. Where the government does not regulate the treatment of medical or psychological disorders certificants should practice in accord with the laws of their state, province, or country. All certificants must practice within their personal areas of expertise.

Licensure

The model licensing act for behavior analysts has been revised several times to reflect best practices and policy. Previous versions included provisions that would have made it in practice more difficult then to obtain the necessary experiential hours for license and independent practice as a clinical psychologist.

Once the person is licensed public protection is still monitored by the licensing board as well as the BACB, both of which make sure that the person receives sufficient ongoing education, and the BACB and licensing board investigate ethical complaints. In February 2008, Indiana, Arizona, Massachusetts, Vermont, Oklahoma and other states now have legislation pending to create licensure for behavior analysts. Pennsylvania was the first state in 2008 to license behavior specialists to cover behavior analysts. Arizona, less than three weeks later, became the first state to license behavior analysts. Other states such as Nevada and Wisconsin have also passed behavior analytic licensure.

In California, after the defeat of a bill to create a license for BCBAs in 2011, the state government instead passed SB 946 which mandates that all non-governmental insurance agencies reimburse for BCBA for behavior therapy in treating autism, starting in 2012. Unlike many weaker bills mandating that autism be covered by insurance, SB 946 does not currently impose an arbitrary cap on services by age or funding amount – in this it is similar to other treatments such as those for heart attacks or other chronic conditions.

Service delivery models

Definitions

Behavior analytic services can be and often are delivered through various treatment modalities. These include:
  • Consultation – an indirect model in which the consultant works with the consultee to change the behavior of the client.
  • Therapy – (individual, group, or family) in which the therapist works directly with a person with some form of pathology to lessen the pathology.
  • Counseling – where the counselor works directly with a person who has problems but no pathology.
  • Coaching – in which the coach works with a person to achieve a life goal.

Primary methods

The two primary methods for delivering behavior analytic services are consultation and/or direct therapy; the former involves three parties: consultant, consultee and a client whose behavior is changed (who may or may not be present for all meetings).

Consultation can involve working with the consultee (i.e., a parent or teacher) to build a plan around the behavior of a client (i.e., a child or student), or training the consultees themselves to modify the behavior of the client. Within the domain of parent–child consultation, standard intervention includes teaching parents skills such as basic reinforcement, time-out and how to manipulate different factors to modify behavior.

Direct therapy involves the relationship of behavior analyst and client, usually one-on-one, in which the analyst is responsible for directly modifying the behavior of their client. Direct therapy is also used in schools but can also be found in group homes, in a behavior modification facility and in behavior therapy (where the focus may be on tasks such as quitting smoking, modifying behaviors for sex offenders or other types of offenders, modifying behaviors related to mood disorders) or to encourage job seeking behavior in psychiatric patients.

History of behavior models

Two older and less used models still exist for the delivery of behavior analytic services. These models worked mostly with normal or typically developing populations. These two models are the Behavioral Coaching and the Behavioral Counseling model. Both were very popular in the 1960s–1980s but have recently seen a decline in popularity, in spite of their success, as proponents argued the merits of holding strictly to learning theory. The Association for Behavior Analysis International still retains a special interest group in behavioral counseling and coaching.

History of behavioral counseling

Behavioral counseling was very popular throughout the 1970s and at least into the early 1980s. Behavioral counseling is an active action–oriented approach that works with the typically developing population but also assists people with specific/discrete problems such as career decision making, drinking, smoking or rehabilitation after injury.

Life coaching

The behavioral coaching model is sometimes referred to as life coaching. However, like counselors and psychologists, life coaches can have varied orientations/change theories (see behavioral change theories). Behavioral life coaches operate mainly from a behavior analytic orientation. Unlike therapy this model is applied to people who desire to achieve a specific goal such as increasing their assertiveness with others. This model is educational and is usually presented as an alternative to therapy. Coaches use behavioral techniques such as objective setting, goal setting, self-control training and behavioral activation to help clients achieve specific life goals. Behavioral coaching was sometimes used to teach job skills to people having mental retardation or head injury. In this area the model made extensive use of task analysis, direct instruction, role play, reinforcement and error correction. Often this approach employs techniques of direct instruction.

Goal of increasing reinforcement

Behavioral counseling was largely seen as a growth model that tried to increase the individuals sense of "freedom" by helping the client reduce punishment or coercion in their lives, build skills, and increase access to reinforcement. B.F. Skinner created a video discussing the processes involved and the importance of reinforcement to increase the sense of "freedom". Behavioral counseling attempts to use in-session reinforcement to improve decision-making, functional assessment of the clients problem, and behavioral interventions to reduce problem behaviors.

Social learning in behavioral counseling

Some behavioral counselors approach therapy from a social learning perspective but many held a position based on the use of behavioral psychology with a focus on the use of operant, respondent conditioning procedures. Some who did adopt a position on modeling held closer to the behavioral view of modeling as generalized imitation developed through learning processes.

Weight loss

The behavioral counseling approach became very popular in weight reduction and is on the American Psychological Association's list of evidence-based practices for weight loss. Behavioral counseling for weight loss by Richard B. Stuart led to the commercial program called Weight Watchers. Recently, efforts have been made to resurrect interest in behavioral counseling as a method to effectively deliver services to normal problemed populations.

Treatment of autism

Among the available approaches to treating autism, early intensive behavioral interventions (EIBIs) have demonstrated efficacy in promoting social and language development and in reducing behaviors that interfere with learning and cognitive functioning. In addition, such therapies have led to increased intellectual skills and increased adaptive functioning. Even with past successes, behavior therapists continue to develop models of social skills.

Therapy qualifications

These are generally treatments based on applied behavior analysis (ABA) and involve intensive training of the therapists, extensive time spent in ABA therapy (20–40 hours per week) and weekly supervision by experienced clinical supervisors—known as board certified behavior analysts. ABA therapy often employs principles of overlearning to help acquire mastery and fluency of skills.

Children with autism

The ABA approach teaches many skills such as appropriate play (a precursor to social interaction and engagement with the world and others), social, motor and verbal behaviors as well as reasoning skills and the ability to self-regulate appropriately. ABA therapy is used to teach behaviors to individuals with autism who may not otherwise observe these behaviors spontaneously through imitation.

In recent years the ABA approach has been criticized by members of the autistic community. Many have reported suffering from post-traumatic stress disorder as a result of being forced to comply with training procedures.

Imitation

Imitation can also be directly trained. ABA therapies teach these skills through use of behavioral observation and reinforcement or prompting to teach each step of a behavior.

Research and treatments

Extensive research exists to show that behavior analysis is an effective treatment for autism with literally hundreds of studies showing its effectiveness with persons of all ages in enhancing functioning, building skills and independence as well as improving life quality. What remains controversial are claims of behavior analysis "curing autism". This controversy exists because behavior analysis is used to alter rates of behavior, and not the condition of "autism." Nonetheless, behavior analysis is used to treat the behaviors of many in the autistic population. While several small studies exist showing that behavior analysis holds promise in this area, the number of well-controlled studies do not rise to the level required by the American Psychological Association to hold the treatment as empirically supported in this area.

Misconceptions of treatment

An increasing amount of research in the field of applied behavior analysis is concerned with autism; and it is a common misconception that behavior analysts work almost exclusively with individuals with autism and that ABA is synonymous with discrete trials teaching. ABA principles can also be used with a range of typical or atypical individuals whose issues vary from developmental delays, significant behavioral problems or undesirable habits.

Curriculum development in behavior analytic programs for children with autism is important. Curriculum should carefully task analyze the skill needed to be learned and then ensure that proper tool skills have been taught before the skill itself is attempted to be taught. Applied behavior analysis is often confused as a table-only therapy. Properly performed, applied behavior analysis should be done in both table and natural environments depending on the student's progress and needs. Once a student has mastered a skill at the table the team should move the student into a natural environment for further training and generalization of the skill.

Frequently standardized assessments such as the Assessment of Basic Language and Learning Skills (ABLLS) is used to create a baseline of the learner's functional skill set. The ABLLS breaks down the learner's strengths and weaknesses to best tailor the applied behavior analysis curriculum to them. By focusing on the exact skills that need help the teacher does not teach a skill the student knows. This can also prevent student frustration at attempting a skill for which they are not ready.

Many families have fought school districts for such programs. Donald Baer, a behavior analyst who often testified as an expert witness, provided several letters to lawyers before he died. Ohio State has archived those letters.

Discrete trials

Discrete trials were originally used by people studying classical conditioning to demonstrate stimulus–stimulus pairing. Discrete trials are often contrasted with free operant procedures, like ones used by B.F. Skinner in learning experiments with rats and pigeons, to show how learning was influenced by rates of reinforcement. The discrete trials method was adapted as a therapy for developmentally delayed children and individuals with autism. For example, Ole Ivar Lovaas used discrete trials to teach autistic children skills including making eye contact, following simple instructions, advanced language and social skills. These discrete trials involved breaking a behavior into its most basic functional unit and presenting the units in a series.

A discrete trial usually consists of the following: the antecedent, the behavior of the student and a consequence. If the student's behavior matches what is desired the consequence is something positive: food, candy, a game, praise, etc. If the behavior was not correct the teacher offers the correct answer then repeats the trial possibly with more prompting, if needed.

There is usually an inter-trial interval that allows for a few seconds to separate each trial to allow the student to process the information, teach the student to wait and make the onset of the next trial more discrete. Discrete trials can be used to develop most skills which includes cognitive, verbal communication, play, social and self-help skills. There is a carefully laid out procedure for error correction and a problem solving model to use if the program gets stuck. Discrete trial is sometimes referred to as the Lovaas technique.

Discrete trials have been helpful in the treatment of pediatric feeding problems as well as in the prevention of feeding problems.

Free operant procedures

In language training, many free operant procedures emerged in the late 1960s and early 1970s. These procedures did not try to train discrimination first, and then passively wait for generalization, but instead worked from the start on actively promoting generalization.>Stokes, T.F. & Baer, D.M. (1977). "An implicit technology of generalization". Journal of Applied Behavior Analysis. 10 (2): 349–367. doi:10.1901/jaba.1977.10-349. PMC 1311194. PMID 16795561.
Initially the model was referred to as incidental teaching but later was called milieu language teaching and finally natural language teaching. Peterson (2007) completed a comprehensive review of 57 studies on these training procedures. This review found that 84% of the studies of the natural language procedures looked at maintenance and 94% looked at generalization and were able to provide direct support of its occurrence as part of the training.

Other applications of applied behavior analysis

Clinical behavior analysis

Dougher's edited volume titled Clinical Behavior Analysis on Context Press highlights the application of behavior analysis to adult outpatients. He identifies four comprehensive behavior analytic programs: Stephen Hayes et al.'s acceptance and commitment therapy (ACT), Jacobson et al. behavioral activation (BA), Kohlenberg & Tsai's functional analytic psychotherapy, exposure therapies (i.e., Systematic desensitization), and the community reinforcement approach for treating addictions. In addition, the book highlights several recent areas of functional analysis research for common clinical problems. Many of these areas are specified in the section on behavior therapy.

Community reinforcement approach and family training

The study of behavioral factors related to addictions has a long history. Thus it is no surprise many behavioral treatments would be found to be efficacious. One efficacious approach is the community reinforcement approach. The community reinforcement approach has considerable research supporting it as efficacious. Started in the 1970s by Nathan H. Azrin and his graduate student Hunt, the community reinforcement approach is a comprehensive operant program built on a functional assessment of a client's drinking behavior and the use of positive reinforcement and contingency management for nondrinking. When combined with disulfiram (an aversive procedure) community reinforcement showed remarkable effects. One component of the program that appears to be particularly strong is the non-drinking club. Applications of community reinforcement to public policy has become the recent focus of this approach.

An offshoot of the community reinforcement approach is the community reinforcement approach and family training. This program is designed to help family members of substance abusers feel empowered to engage in treatment. The rates of success have varied somewhat by study but seem to cluster around 70%. The program uses a variety of interventions based on functional assessment including a module to prevent domestic violence. Partners are trained to use positive reinforcement, various communication skills and natural consequences.

Children with disruptive disorders and parenting

With children, applied behavior analysis provides the core of the positive behavior support movement and creates the basis of Teaching-Family Model homes. Teaching-Family homes have been found to reduce recidivism for delinquent youths both while they are in the homes and after they leave. Operant procedures form the basis of behavioral parent training developed from social learning theorists. The etiological models for antisocial behavior show considerable correlation with negative reinforcement and response matching. Behavioral parent training or Parent Management Training has been very successful in the treatment of conduct disorders in children and adolescents with recent research focusing on making it more culturally sensitive. In addition, behavioral parent training has been shown to reduce corporal or abusive child discipline tactics. Behavior analysts typically adhere to a behavioral model of child development in their practice.

Recidivism

Recent studies showing that behavior analysis can reduce recidivism have led to a resurgence in behavior therapy facilities. Of particular interest has been the growing research on the Teaching-Family Model which was developed by Montrose Wolf and clearly reduces recidivism rates. In addition, behaviorally-based early intervention programs have shown effectiveness.

Exposure therapy

Methods of counter-conditioning and respondent extinction, called exposure therapy, are often employed by many behavior therapists in the treatment of phobias, anxiety disorders such as post-traumatic stress disorder (PTSD), and addictions (cue exposure). Prolonged exposure therapy has been particularly helpful with PTSD. Several procedures to block respondent conditioning such as blocking and overshadowing are sometimes used in behavioral medicine to prevent conditioned taste aversion for patients with chemotherapy treatments. Exposure with Response Prevention (ERP) is a respondent extinction procedure often used to treat obsessive–compulsive behavior. Escape response blocking is critical for this procedure. For PTSDs exposure therapy is one of the few evidence-based techniques. Recent research suggests exposure therapy is an excellent means of alleviating both the anxiety and cognitive symptoms specific to PTSD with no additive effect for additional cognitive components. Several authors have argued that exposure by itself is necessary and sufficient to produce behavior change in reducing fear in social phobics and helping them engage more effectively with others. The Washington Post ran a story that only exposure therapy is proven for PTSD and that cognitive therapy or even drug therapy are not shown at this time to be effective.

Operant-based EEG biofeedback

Kamiya (1968) demonstrated that the alpha rhythm in humans could be operantly conditioned. He published an influential article in Psychology Today that summarized research showing subjects learn to discriminate when alpha was present or absent, and that they could use feedback to shift the dominant alpha frequency about 1 Hz. Almost half of his subjects reported experiencing a pleasant "alpha state" characterized as an "alert calmness". These reports may have contributed to the perception of alpha biofeedback as a shortcut to a meditative state. He also studied the electroencephalography (EEG) correlates of meditative states. Operant conditioning of EEG has had considerable support in many areas including attention deficit hyperactivity disorder (ADHD) and even seizure disorders. Early studies of the procedure included the treatment of seizure disorders. Luber and colleagues (1981) conducted a double blind crossover study showing that seizure activity decreased by 50% in the contingent conditioning of inhibiting brain waves as opposed to the non-contingent use. Sterman (2000) reviewed 18 studies of a total of 174 clients and found 82% of the participants had significant seizure reduction (30% less weekly seizures).

Organizational

Behavior analysis with organizations is sometimes combined with systems theory in an approach called organizational behavior management. This approach has shown success particularly in the area of behavior-based safety. Behavior safety research has lately become focused on factors that lead programs to being retained in institutions long after the designer leaves.

Educational

Direct instruction and Direct Instruction: the former representing the process and the latter a specific curriculum that highlights that process remain both current and controversial in behavior analysis. The essential features are a carefully structured fast-paced program based on teacher-directed small group instruction. One controversy that remains is that teacher creativity is admonished in the program. Even with such issues to be worked out positive gains in reading for the approach have been reported in the literature since 1968. An example of the positive gains reported by Meyer (1984) found that 34% of children in the DISTAR group were accepted to college as compared to only 17% of the control school. Current research is focused on peer delivery of the program.

School-wide positive behavior support is based on the use of behavior analytic procedures delivered in an organizational behavior management approach. School-wide behavioral support has been increasingly accepted by administrators, lawmakers and teachers as a way to improve safety in classrooms.

Curriculum-based measurement and curriculum matching is another active area of application. Curriculum-based measurement uses rate and reading performance as the primary variable in determining reading levels. The goal is to better match children to the appropriate curriculum level to remove frustration as well as to track reading performance over time to see if it is improving with intervention. This model also serves as the basis for response to intervention models.

Functional behavioral assessment was mandated in the United States for children who meet criteria under the individuals with disabilities education act. This approach has precluded many procedures for modifying and maintaining children in not just the school system, but in many cases in the regular education setting. Even children with severe behavior problems appear to be helped.

Teaching children to recruit attention has become a very important area in education. In many cases one function of children's disruptive behavior is to get attention.

Hospital settings

One area of interest in hospitals is the blocking effect—especially for conditioned taste aversion. This area of interest is considered important in the prevention of weigh loss during chemotherapy for cancer patients. Another area of growing interest in the hospital setting is the use of operant-based biofeedback with those suffering from cerebral palsy or minor spinal injuries.

Brucker's group at the University of Miami has had some success with specific operant conditioning-based biofeedback procedures to enhance functioning. While such methods are not a cure, and gains tend to be in the moderate range, they do show ability to help remaining central nervous system cells to regain some control over lost areas of functioning.

Residential treatment

Behavioral interventions have been very helpful in reducing problem behaviors in residential treatment centers. The type of residential versus mental retardation does not appear to be a factor. Behavioral interventions have been found to be successful even when medication interventions fail.

Space program

Probably one of the most interesting applications of behavior analysis in the 1960s was its contribution to the space program. Research in this area is used to train astronauts including the chimpanzees sent into space. Continued work in this area focuses on ensuring that astronauts who live in confined areas and space do not develop behavioral health problems. Most of this work was led by pioneer behaviorist Joseph V. Brady.

Consumer and professional relationships

Open communication and a supportive relationship between educational systems and families allow the student to receive a beneficial education. This pertains to typical learners as well as to individuals who need additional services. It was not until the 1960s that researchers began exploring behavior analysis as a method to educate those children who fall somewhere along the autism spectrum. Behavior analysts agree that consistency in and out of the school classroom is key in order for children with autism to maintain proper standing in school and continue to develop to their greatest potential.

Applied behavior analysts sometimes work with a team to address a person's educational or behavioral needs. Other professionals such as speech therapists, physicians and the primary caregivers are treated as key to the implementation of successful therapy in the applied behavior analysis (ABA) model. The ABA method relies on behavior principles to develop treatments appropriate for the individual. Regular meetings with professionals to discuss programming are one way to establish a successful working relationship between a family and their school. It is beneficial when a caregiver can conduct generalization procedures outside of school. In the ABA framework, developing and maintaining a structured working relationship between parents or guardians and professionals is essential to ensure consistent treatment.

Intervention goals

When working directly with clients, behavior analysts engage in a process of collaborative goal setting. Goal setting ensures that the client is already under stimulus control of the goal and is thus more likely to engage in behavior to achieve it. Behavior analytic programs are ultimately skill building, they enhance functioning, lead to higher quality of life, and build self-control. One of the most distinguishing features of behavior analysis has been its core belief that all individuals have a right to the most effective treatment for their condition. and a right to the most effective educational strategy available.

History

Applied behavior analysis is the applied side of the experimental analysis of behavior. It is based on the principles of operant and respondent conditioning and represents a major approach to behavior therapies. Its origin can be traced back to Teodoro Ayllon and Jack Michael's 1959 article "The psychiatric nurse as a behavioral engineer" as well as to initial efforts to implement teaching machines.

The research basis of ABA can be found in the theoretical work of behaviorism and radical behaviorism originating with the work of B.F. Skinner. In 1968 Baer, Wolf and Risley wrote an article that was the source of contemporary applied behavior analysis providing the criteria to judge the adequacy of research and practice in applied behavior analysis. It became the core and centerpiece behavioral engineering

Work in respondent conditioning (what some would term classical conditioning) began with the work of Joseph Wolpe in the 1960s. It was improved by the work of Edna B Foa who did extensive research on exposure and response prevention for obsessive–compulsive disorder (OCD). In addition, she worked on exposure therapy for post-traumatic stress disorder.

Over the years most behavior analysts have existed and conducted research in many areas and University departments: behavior analysis, psychology, special education, regular education, speech–language pathology, communication disorders, school psychology, criminal justice and family life. They have belonged to many organizations including the American Psychological Association (APA) and have most often found a core intellectual home in the Association for Behavior Analysis International.

Current research

Behavior analysis remains one of the most active research areas in all of psychology, developmental disability, mental health and other studies of human behavior. Current research in behavior analysis focuses on expanding the tradition by looking at setting events, behavioral activation, the Matching law, relational frame theory, stimulus equivalences and covert conditioning as exemplified in Skinner's model of rule-governed behavior Verbal Behavior.

Experimental psychopathology

Experimental psychopathology is a behavior therapy area in which animal models are developed to simulate human pathology. For example, Wolpe studied cats to build his theory of human anxiety. This work continues today in the study of both pathology and treatment.

Historical controversies

Initially, applied behavior analysis used punishment such as shouting and slaps to reduce unwanted behaviors. Ethical opposition to such aversive practices caused them to fall out of favor and has stimulated development of less aversive methods. In general, aversion therapy and punishment are now less frequently used as ABA treatments due to legal restrictions. However, procedures such as odor aversion, covert sensitization and other covert conditioning procedures, based on punishment or aversion strategies, are still used effectively in the treatment of pedophiles. In addition, with some populations such as conduct disorder in children there is considerable evidence that has developed to show that all positive programs can produce change but that children will not enter into the normal range without punishment procedures. These programs have shifted to using child time-out and response–cost procedures to ensure that clients rights to effective interventions are met.

Homosexuality

In 1973 the APA removed homosexuality from its Diagnostic and Statistical Manual yet it kept "ego dystonic" homosexuality as a condition until the DSM III-R (1987). In 1974 Ole Ivar Lovaas, pioneer of the use of discrete trial teaching (DTT) to treat autism, was the second author on a journal article describing the use of ABA to reduce "feminine" behaviors and increase "masculine" behaviors of a male child in an effort to prevent adult transsexualism. Treatments designed to uphold traditional sex-role behaviors were opposed by some behavior analysts who argued that the intervention was not justified. In the late 1960s Wolpe refused to treat homosexual behavior arguing that it was easier and more productive to treat the religious guilt than the homosexuality. He instead provided assertiveness training to a homosexual client. Most behavior analysts and behavior therapists have not worked in sexual re–orientation therapy since Gerald Davison argued that the issue was not one of effectiveness but of ethics. When he wrote the paper presenting this position, Davison was president of the Association for the Advancement of Behavior Therapy, now the Association for Behavioral and Cognitive Therapies, and thus his views carried much weight. Davison argued that homosexuality is not pathological and is only a problem if it is regarded as one by society and the therapist.

Ethical practice

Punishment and aversion therapies

The use of punishment and aversion therapy procedures are a constant ethical challenge for behavior analysts. One of the original reasons for the development of the Behavior Analyst Certification Board were cases of abuse from behaviorists. Both continue to draw proponents and opposition, however, in some of the more controversial cases some middle ground has been found through legislation.

Sex offenders and recidivism

A study in 1991 showed that behavior modification was effective in sex offender treatment and covert sensitization, and it has been shown to have some effects on reducing recidivism. However Gene Able, who has done extensive research in this area, suggests that it is not as effective outside of the package which contains odor aversion, satiation therapy (masturbatory reconditioning), and various social skills training programs including empathy training. Current behavior analysis programs offer this type of comprehensive treatment approach. In addition they use a combination of functional assessment, behavior chain analysis and risk assessment to create relapse prevention strategies and to help the offender to develop better self-control.

With sex offenders who have retardation, comprehensive behavioral programming has been effective at least in the short run. This treatment included formal academic and vocational training, sex education, a unit token economy, and individual behavior therapy including sexual reconditioning. In addition it included supported competitive employment, fading of program structure, and increased community participation.

Journals

There are multiple journals which produce articles on the clinical applications of applied behavior analysis. The most popular, and widely used, of these journals is the Journal of Applied Behavior Analysis. There are many other journals dedicated to this field. Some of these include The Behavior Analyst Today, the International Journal of Behavioral Consultation and Therapy and three new journals scheduled for release in 2008: Behavior Analysis in Sports, Health, Fitness and Behavioral Medicine, the Journal of Behavior Analysis in Crime and Victim: Treatment and Prevention as well as the Association for Behavior Analysis International's Behavior Analysis in Practice.

Professional organizations

The Association for Behavior Analysis International has a special interest group for practitioner issues, behavioral counseling, and clinical behavior analysis. The Association for Behavior Analysis International has larger special interest groups for autism and behavioral medicine. The Association for Behavior Analysis International serves as the core intellectual home for behavior analysts. The Association for Behavior Analysis International sponsors multiple conferences/year, including the annual conference, annual autism conference, biannual international conference, and other conferences on specific issues such as behavioral theory and sustainability.

The Association for Behavioral and Cognitive Therapies (ABCT) also has an interest group in behavior analysis, which focuses on clinical behavior analysis. In addition, the Association for Behavioral and Cognitive Therapies has a special interest group on addictions.

Doctoral level behavior analysts who are psychologists belong to the American Psychological Association's division 25: Behavior analysis. APA offers a diplomate in behavioral psychology.

Counseling psychology

From Wikipedia, the free encyclopedia

Counseling psychology
ICD-10-PCSGZ6
ICD-9-CM94.45-94.49
MeSHD003376

Counseling psychology is a psychological specialty that encompasses research and applied work in several broad domains: counseling process and outcome; supervision and training; career development and counseling; and prevention and health. Some unifying themes among counseling psychologists include a focus on assets and strengths, person–environment interactions, educational and career development, brief interactions, and a focus on intact personalities.

History

The term "counselling" is of American origin, coined by Carl Rogers, who, lacking a medical qualification was prevented from calling his work psychotherapy. In the U.S., counselling psychology, like many modern psychology specialties, started as a result of World War II. During the war, the U.S. military had a strong need for vocational placement and training. In the 1940s and 1950s, the Veterans Administration created a specialty called "counseling psychology", and Division 17[3] (now known as the Society for Counseling Psychology) of the APA was formed. The Society of Counseling Psychology unites psychologists, students and professionals who are dedicated to promote education and training, practice, scientific investigation, diversity and public interest in the field of professional psychology. This fostered interest in counselor training, and the creation of the first few counseling psychology PhD programs. The first counseling psychology PhD programs were at the University of Minnesota; Ohio State University; University of Maryland, College Park; University of Missouri; Teachers College, Columbia University; and University of Texas at Austin.

In recent decades, counseling psychology as a profession has expanded and is now represented in numerous countries around the world. Books describing the present international state of the field include the Handbook of Counseling and Psychotherapy in an International Context; the International Handbook of Cross-Cultural Counseling; and Counseling Around the World: An International Handbook. Taken together these volumes trace the global history of the field, explore divergent philosophical assumptions, counseling theories, processes, and trends in different countries, and review a variety of global counselor education programs. Moreover, traditional and indigenous treatment and healing methods that may predate modern counseling methods by hundreds of years remain of significance in many non-Western and Western countries.

Employment and salary

Counseling psychologists are employed in a variety of settings depending on the services they provide and the client populations they serve. Some are employed in colleges and universities as teachers, supervisors, researchers, and service providers. Others are employed in independent practice providing counseling, psychotherapy, assessment, and consultation services to individuals, couples/families, groups, and organizations. Additional settings in which counseling psychologists practice include community mental health centers, Veterans Administration medical centers and other facilities, family services, health maintenance organizations, rehabilitation agencies, business and industrial organizations and consulting within firms.

The amount of training required for psychologists differs based on the country in which they are practicing. Typically, a psychologist completes an Undergraduate Degree followed by 5–6 years of further study and/or training, leading to the Ph.D. While both psychologists and psychiatrists offer counselling, psychiatrists must possess a medical degree and thus are able to prescribe medication where psychologists are not.

In 2017, the median salary for counseling psychologists in the United States was US$88,395.

Process and outcome

Counseling psychologists are interested in answering a variety of research questions about counseling process and outcome. Counseling process refers to how or why counseling happens and progresses. Counseling outcome addresses whether or not counseling is effective, under what conditions it is effective, and what outcomes are considered effective—such as symptom reduction, behavior change, or quality of life improvement. Topics commonly explored in the study of counseling process and outcome include therapist variables, client variables, the counseling or therapeutic relationship, cultural variables, process and outcome measurement, mechanisms of change, and process and outcome research methods. Classic approaches appeared early in the US in the field of humanistic psychology by Carl Rogers who identified the mission of counseling interview as "to permit deeper expression that the client would ordinarily allow himself"

Therapist variables

Therapist variables include characteristics of a counselor or psychotherapist, as well as therapist technique, behavior, theoretical orientation and training. In terms of therapist behavior, technique and theoretical orientation, research on adherence to therapy models has found that adherence to a particular model of therapy can be helpful, detrimental, or neutral in terms of impact on outcome.

A recent meta-analysis of research on training and experience suggests that experience level is only slightly related to accuracy in clinical judgment. Higher therapist experience has been found to be related to less anxiety, but also less focus. This suggests that there is still work to be done in terms of training clinicians and measuring successful training.

Client variables

Client characteristics such as help-seeking attitudes and attachment style have been found to be related to client use of counseling, as well as expectations and outcome. Stigma against mental illness can keep people from acknowledging problems and seeking help. Public stigma has been found to be related to self-stigma, attitudes towards counseling, and willingness to seek help.

In terms of attachment style, clients with avoidance styles have been found to perceive greater risks and fewer benefits to counseling, and are less likely to seek professional help, than securely attached clients. Those with anxious attachment styles perceive greater benefits as well as risks to counseling. Educating clients about expectations of counseling can improve client satisfaction, treatment duration and outcomes, and is an efficient and cost-effective intervention.

Counseling relationship

The relationship between a counselor and client is the feelings and attitudes that a client and therapist have towards one another, and the manner in which those feelings and attitudes are expressed. Some theorists have suggested that the relationship may be thought of in three parts: transference and countertransference, working alliance, and the real—or personal—relationship. Other theorists argue that the concepts of transference and countertransference are outdated and inadequate.

Transference can be described as the client's distorted perceptions of the therapist. This can have a great effect on the therapeutic relationship. For instance, the therapist may have a facial feature that reminds the client of their parent. Because of this association, if the client has significant negative or positive feelings toward their parent, they may project these feelings onto the therapist. This can affect the therapeutic relationship in a few ways. For example, if the client has a very strong bond with their parent, they may see the therapist as a father or mother figure and have a strong connection with the therapist. This can be problematic because as a therapist, it is not ethical to have a more than "professional" relationship with a client. It can also be a good thing, because the client may open up greatly to the therapist. In another way, if the client has a very negative relationship with their parent, the client may feel negative feelings toward the therapist. This can then affect the therapeutic relationship as well. For example, the client may have trouble opening up to the therapist because he or she lacks trust in their parent (projecting these feelings of distrust onto the therapist).

Another theory about the function of the counseling relationship is known as the secure-base hypothesis, which is related to attachment theory. This hypothesis proposes that the counselor acts as a secure base from which clients can explore and then check in with. Secure attachment to one's counselor and secure attachment in general have been found to be related to client exploration. Insecure attachment styles have been found to be related to less session depth than securely attached clients.

Cultural variables

Counseling psychologists are interested in how culture relates to help-seeking and counseling process and outcome. Standard surveys exploring the nature of counselling across cultures and various ethnic groups include Counseling Across Cultures by Paul B. Pedersen, Juris G. Draguns, Walter J. Lonner and Joseph E. Trimble, Handbook of Multicultural Counseling by Joseph G. Ponterotto, J. Manueal Casas, Lisa A. Suzuki and Charlene M. Alexander and Handbook of Culture, Therapy, and Healing by Uwe P. Gielen, Jefferson M. Fish and Juris G. Draguns. Janet E. Helms' racial identity model can be useful for understanding how the relationship and counseling process might be affected by the client's and counselor's racial identity. Recent research suggests that clients who are Black are at risk for experiencing racial micro-aggression from counselors who are White.

Efficacy for working with clients who are lesbians, gay men, or bisexual might be related to therapist demographics, gender, sexual identity development, sexual orientation, and professional experience. Clients who have multiple oppressed identities might be especially at-risk for experiencing unhelpful situations with counselors, so counselors might need help with gaining expertise for working with clients who are transgender, lesbian, gay, bisexual, or transgender people of color, and other oppressed populations.

Gender role socialization can also present issues for clients and counselors. Implications for practice include being aware of stereotypes and biases about male and female identity, roles and behavior such as emotional expression. The APA guidelines for multicultural competence outline expectations for taking culture into account in practice and research.

Counseling ethics and regulation

Perceptions on ethical behaviors vary depending upon geographical location, but ethical mandates are similar throughout the global community. Ethical standards are created to help practitioners, clients and the community avoid any possible harm or potential for harm. The standard ethical behaviors are centered on "doing no harm" and preventing harm.

Counselors cannot share any confidential information that is obtained through the counseling process without specific written consent by the client or legal guardian except to prevent clear, imminent danger to the client or others, or when required to do so by a court order. Insurance companies or government programs will also be notified of certain information about your diagnosis and treatment to determine if your care is covered. Those companies and government programs are bound by HIPAA to keep that information strictly confidential.

Counselors are held to a higher standard that most professionals because of the intimacy of their therapeutic delivery. Counselors are not only to avoid fraternizing with their clients. They should avoid dual relationships, and never engage in sexual relationships.

Counselors are to avoid receiving gifts, favors, or trade for therapy. In some communities, it may be avoidable given the economic standing of that community. In cases of children, children and the mentally handicapped, they may feel personally rejected if an offering is something such as a "cookie". As counselors, a judgement call must be made, but in a majority of cases, avoiding gifts, favors, and trade can be maintained.

The National Board for Certified Counselors states that counselors "shall discuss important considerations to avoid exploitation before entering into a non-counseling relationship with a former client. Important considerations to be discussed include amount of time since counseling service termination, duration of counseling, nature and circumstances of client's counseling, the likelihood that the client will want to resume counseling at some time in the future; circumstances of service termination and possible negative effects or outcomes."

Outcome measurement

Counseling outcome measures might look at a general overview of symptoms, symptoms of specific disorders, or positive outcomes, such as subjective well-being or quality of life. The Outcome Questionnaire-45 is a 45-item self-report measure of psychological distress. An example of disorder-specific measure is the Beck Depression Inventory. The Quality of Life Inventory is a 17-item self-report life satisfaction measure.

Process and outcome research methods

Research about the counseling process and outcome uses a variety of research methodologies to answer questions about if, how, and why counseling works. Quantitative methods include randomly controlled clinical trials, correlation studies over the course of counseling, or laboratory studies about specific counseling process and outcome variables. Qualitative research methods can involve conducting, transcribing and coding interviews; transcribing and/or coding therapy sessions; or fine-grain analysis of single counseling sessions or counseling cases.

Training and supervision

Professional training process

Counseling psychologists are trained in graduate programs. Almost all programs grant a PhD, but a few grant a Psy.D. or Ed.D. Most doctoral programs take 5–6 years to complete. Graduate work in counseling psychology includes coursework in general psychology and statistics, counseling practice, and research. Students must complete an original dissertation at the end of their graduate training. Students must also complete a one-year full-time internship at an accredited site before earning their doctorate. In order to be licensed to practice, counseling psychologists must gain clinical experience under supervision, and pass a standardized exam.

Australia

In Australia, counseling psychology programs are accredited by the Australian Psychology Accreditation Council (APAC). To become registered as a counseling psychologist, one must meet the criteria for the area of practice endorsement. This includes an undergraduate degree in the science of psychology, an Honours degree or Postgraduate Diploma in Psychology, and a Master's or Doctorate degree in counseling psychology. Graduates must then completed a regstrar program to obtain area of practice endorsement and use the tile counseling psychologist. A substantial component of this master's degree is dedicated to individual psychotherapy, family and couples therapy, group therapy, developmental theory and psychopathology.

Training models and research

Counseling psychology includes the study and practice of counselor training and counselor supervision. As researchers, counseling psychologists may investigate what makes training and supervision effective. As practitioners, counseling psychologists may supervise and train a variety of clinicians. Counselor training tends to occur in formal classes and training programs. Part of counselor training may involve counseling clients under the supervision of a licensed clinician. Supervision can also occur between licensed clinicians, as a way to improve clinicians' quality of work and competence with various types of counseling clients.

As the field of counseling psychology formed in the mid-20th century, initial training models included Robert Carkuff's human relations training model, Norman Kagan's Interpersonal Process Recall, and Allen Ivey's microcounseling skills. Modern training models include Gerard Egan's skilled helper model, and Clara E. Hill's three-stage model (exploration, insight, and action). A recent analysis of studies on counselor training found that modeling, instruction, and feedback are common to most training models, and seem to have medium to large effects on trainees.

Supervision models and research

Like the models of how clients and therapists interact, there are also models of the interactions between therapists and their supervisors. Edward S. Bordin proposed a model of supervision working alliance similar to his model of therapeutic working alliance. The Integrated Development Model considers the level of a client's motivation/anxiety, autonomy, and self and other awareness. The Systems Approach to Supervision views the relationship between supervisor and supervised as most important, in addition to characteristics of the supervisor's personal characteristics, counseling clients, training setting, as well as the tasks and functions of supervision. The Critical Events in Supervision model focuses on important moments that occur between the supervisor and supervised.

Problems can arise in supervision and training. First, supervisors are liable for malpractice. Also, questions have arisen as far as a supervisor's need for formal training to be a competent supervisor. Recent research suggests that conflicting, multiple relationships can occur between supervisors and clients, such as that of the client, instructor, and clinical supervisor. The occurrence of racial micro-aggression against Black clients suggests potential problems with racial bias in supervision. In general, conflicts between a counselor and his or her own supervisor can arise when supervisors demonstrate disrespect, lack of support, and blaming.

Vocational development and career counseling

Vocational theories

There are several types of theories of vocational choice and development. These types include trait and factor theories, social cognitive theories, and developmental theories. Two examples of trait and factor theories, also known as person–environment fit, are Holland's theory and the Theory of Work Adjustment.

John Holland hypothesized six vocational personality/interest types and six work environment types: realistic, investigative, artistic, social, enterprising, and conventional. When a person's vocational interests match his or her work environment types, this is considered congruence. Congruence has been found to predict occupation and college major.

The Theory of Work Adjustment (TWA), as developed by René Dawis and Lloyd Lofquist,[54] hypothesizes that the correspondence between a worker's needs and the reinforced systems predicts job satisfaction, and that the correspondence between a worker's skills and a job's skill requirements predicts job satisfaction. Job satisfaction and personal satisfaction together should determine how long one remains at a job. When there is a discrepancy between a worker's needs or skills and the job's needs or skills, then change needs to occur either in the worker or the job environment.

Social Cognitive Career Theory (SCCT) has been proposed by Robert D. Lent, Steven D. Brown and Gail Hackett. The theory takes Albert Bandura's work on self-efficacy and expands it to interest development, choice making, and performance. Person variables in SCCT include self-efficacy beliefs, outcome expectations and personal goals. The model also includes demographics, ability, values, and environment. Efficacy and outcome expectations are theorized to interrelate and influence interest development, which in turn influences choice of goals, and then actions. Environmental supports and barriers also affect goals and actions. Actions lead to performance and choice stability over time.

Career development theories propose vocational models that include changes throughout the lifespan. Donald Super's model proposes a lifelong five-stage career development process. The stages are growth, exploration, establishment, maintenance, and disengagement. Throughout life, people have many roles that may differ in terms of importance and meaning. Super also theorized that career development is an implementation of self-concept. Gottfredson also proposed a cognitive career decision-making process that develops through the lifespan. The initial stage of career development is hypothesized to be the development of self-image in childhood, as the range of possible roles narrows using criteria such as sex-type, social class, and prestige. During and after adolescence, people take abstract concepts into consideration, such as interests.

Career counseling

Career counseling may include provision of occupational information, modeling skills, written exercises, and exploration of career goals and plans. Career counseling can also involve the use of personality or career interest assessments, such as the Myers-Briggs Type Indicator, which is based on Carl Jung's theory of psychological type, or the Strong Interest Inventory, which makes use of Holland's theory. Assessments of skills, abilities, and values are also commonly assessed in career counseling.

Professional journals


In Australia, counseling psychology articles are published in the counseling psychology section of the Australian Psychologist.

In Europe, the scholarly journals of the profession include the European Journal of Counselling Psychology (under the auspices of the European Association of Counselling Psychology) and the Counselling Psychology Review (under the auspices of the British Psychological Society). Counselling Psychology Quarterly is an international interdisciplinary publication of Routledge (part of the Taylor & Francis Group).

Neuropsychology

From Wikipedia, the free encyclopedia
 https://en.wikipedia.org/wiki/Neuropsychology

Neuropsychology is a branch of psychology that is concerned with how the brain and the rest of the nervous system influence a person's cognition and behaviors. More importantly, professionals in this branch of psychology often focus on how injuries or illnesses of the brain affect cognitive functions and behaviors.

It is both an experimental and clinical field of psychology that aims to understand how behavior and cognition are influenced by brain functioning and is concerned with the diagnosis and treatment of behavioral and cognitive effects of neurological disorders. Whereas classical neurology focuses on the pathology of the nervous system and classical psychology is largely divorced from it, neuropsychology seeks to discover how the brain correlates with the mind through the study of neurological patients. It thus shares concepts and concerns with neuropsychiatry and with behavioral neurology in general. The term neuropsychology has been applied to lesion studies in humans and animals. It has also been applied in efforts to record electrical activity from individual cells (or groups of cells) in higher primates (including some studies of human patients).

In practice, neuropsychologists tend to work in research settings (universities, laboratories or research institutions), clinical settings (medical hospitals or rehabilitation settings, often involved in assessing or treating patients with neuropsychological problems), or forensic settings or industry (often as clinical-trial consultants where CNS function is a concern).

History

Neuropsychology is a relatively new discipline within the field of psychology. The first textbook defining the field, Fundamentals of Human Neuropsychology, was initially published by Kolb and Whishaw in 1980. However, the history of its development can be traced back to the Third Dynasty in ancient Egypt, perhaps even earlier. There is much debate as to when societies started considering the functions of different organs. For many centuries, the brain was thought useless and was often discarded during burial processes and autopsies. As the field of medicine developed its understanding of human anatomy and physiology, different theories were developed as to why the body functioned the way it did. Many times, bodily functions were approached from a religious point of view and abnormalities were blamed on bad spirits and the gods. The brain has not always been considered the center of the functioning body. It has taken hundreds of years to develop our understanding of the brain and how it affects our behaviors.

Ancient Egypt

In ancient Egypt, writings on medicine date from the time of the priest Imhotep. They took a more scientific approach to medicine and disease, describing the brain, trauma, abnormalities, and remedies for reference for future physicians. Despite this, Egyptians saw the heart, not the brain, as the seat of the soul.

Aristotle

Senses, perception, memory, dreams, action in Aristotle's biology. Impressions are stored in the seat of perception, linked by his Laws of Association (similarity, contrast, and contiguity).
 
Aristotle reinforced this focus on the heart which originated in Egypt. He believed the heart to be in control of mental processes, and looked on the brain, due to its inert nature, as a mechanism for cooling the heat generated by the heart. He drew his conclusions based on the empirical study of animals. He found that while their brains were cold to the touch and that such contact did not trigger any movements, the heart was warm and active, accelerating and slowing dependent on mood. Such beliefs were upheld by many for years to come, persisting through the Middle Ages and the Renaissance period until they began to falter in the 17th century due to further research. The influence of Aristotle in the development of neuropsychology is evident within language used in modern day, since we "follow our hearts" and "learn by the heart."

Hippocrates

Hippocrates viewed the brain as the seat of the soul. He drew a connection between the brain and behaviors of the body, writing: "The brain exercises the greatest power in the man." Apart from moving the focus from the heart as the "seat of the soul" to the brain, Hippocrates did not go into much detail about its actual functioning. However, by switching the attention of the medical community to the brain, his theory led to more scientific discovery of the organ responsible for our behaviors. For years to come, scientists were inspired to explore the functions of the body and to find concrete explanations for both normal and abnormal behaviors. Scientific discovery led them to believe that there were natural and organically occurring reasons to explain various functions of the body, and it could all be traced back to the brain. Hippocrates introduced the concept of the mind – which was widely seen as a separate function apart from the actual brain organ.

René Descartes

Philosopher René Descartes expanded upon this idea and is most widely known for his work on the mind-body problem. Often Descartes's ideas were looked upon as overly philosophical and lacking in sufficient scientific foundation. Descartes focused much of his anatomical experimentation on the brain, paying special attention to the pineal gland – which he argued was the actual "seat of the soul." Still deeply rooted in a spiritual outlook towards the scientific world, the body was said to be mortal, and the soul immortal. The pineal gland was then thought to be the very place at which the mind would interact with the mortal and machine-like body. At the time, Descartes was convinced the mind had control over the behaviors of the body (controlling the person) – but also that the body could have influence over the mind, which is referred to as dualism. This idea that the mind essentially had control over the body, but the body could resist or even influence other behaviors, was a major turning point in the way many physiologists would look at the brain. The capabilities of the mind were observed to do much more than simply react, but also to be rational and function in organized, thoughtful ways – much more complex than he thought the animal world to be. These ideas, although disregarded by many and cast aside for years led the medical community to expand their own ideas of the brain and begin to understand in new ways just how intricate the workings of the brain really were, and the complete effects it had on daily life, as well as which treatments would be the most beneficial to helping those people living with a dysfunctional mind. The mind-body problem, spurred by René Descartes, continues to this day with many philosophical arguments both for and against his ideas. However controversial they were and remain today, the fresh and well-thought-out perspective Descartes presented has had long-lasting effects on the various disciplines of medicine, psychology and much more, especially in putting an emphasis on separating the mind from the body in order to explain observable behaviors.

Thomas Willis


It was in the mid-17th century that another major contributor to the field of neuropsychology emerged. Thomas Willis studied at Oxford University and took a physiological approach to the brain and behavior. It was Willis who coined the words 'hemisphere' and 'lobe' when referring to the brain. He was one of the earliest to use the words 'neurology' and 'psychology'. Rejecting the idea that humans were the only beings capable of rational thought, Willis looked at specialized structures of the brain. He theorized that higher structures accounted for complex functions, whereas lower structures were responsible for functions similar to those seen in other animals, consisting mostly of reactions and automatic responses. He was particularly interested in people who suffered from manic disorders and hysteria. His research constituted some of the first times that psychiatry and neurology came together to study individuals. Through his in-depth study of the brain and behavior, Willis concluded that automated responses such as breathing, heartbeats and other various motor activities were carried out within the lower region of the brain. Although much of his work has been made obsolete, his ideas presented the brain as more complex than previously imagined, and led the way for future pioneers to understand and build upon his theories, especially when it came to looking at disorders and dysfunctions in the brain.

Franz Joseph Gall

Neuroanatomist and physiologist Franz Joseph Gall made major progress in understanding the brain. He theorized that personality was directly related to features and structures within the brain. However, Gall's major contribution within the field of neuroscience is his invention of phrenology. This new discipline looked at the brain as an organ of the mind, where the shape of the skull could ultimately determine one's intelligence and personality. This theory was like many circulating at the time, as many scientists were taking into account physical features of the face and body, head size, anatomical structure, and levels of intelligence; only Gall looked primarily at the brain. There was much debate over the validity of Gall's claims however, because he was often found to be wrong in his predictions. He was once sent a cast of René Descartes' skull, and through his method of phrenology claimed the subject must have had a limited capacity for reasoning and higher cognition. As controversial and false as many of Gall's claims were, his contributions to understanding cortical regions of the brain and localized activity continued to advance understanding of the brain, personality, and behavior. His work is considered crucial to having laid a firm foundation in the field of neuropsychology, which would flourish over the next few decades.

Jean-Baptiste Bouillaud

Jean-Baptiste Bouillaud

Towards the late 19th century, the belief that the size of ones skull could determine their level of intelligence was discarded as science and medicine moved forward. A physician by the name of Jean-Baptiste Bouillaud expanded upon the ideas of Gall and took a closer look at the idea of distinct cortical regions of the brain each having their own independent function. Bouillaud was specifically interested in speech and wrote many publications on the anterior region of the brain being responsible for carrying out the act of ones speech, a discovery that had stemmed from the research of Gall. He was also one of the first to use larger samples for research although it took many years for that method to be accepted. By looking at over a hundred different case studies, Bouillaud came to discover that it was through different areas of the brain that speech is completed and understood. By observing people with brain damage, his theory was made more concrete. Bouillaud, along with many other pioneers of the time made great advances within the field of neurology, especially when it came to localization of function. There are many arguable debates as to who deserves the most credit for such discoveries, and often, people remain unmentioned, but Paul Broca is perhaps one of the most famous and well known contributors to neuropsychology – often referred to as "the father" of the discipline.

Paul Broca

Inspired by the advances being made in the area of localized function within the brain, Paul Broca committed much of his study to the phenomena of how speech is understood and produced. Through his study, it was discovered and expanded upon that we articulate via the left hemisphere. Broca's observations and methods are widely considered to be where neuropsychology really takes form as a recognizable and respected discipline. Armed with the understanding that specific, independent areas of the brain are responsible for articulation and understanding of speech, the brains abilities were finally being acknowledged as the complex and highly intricate organ that it is. Broca was essentially the first to fully break away from the ideas of phrenology and delve deeper into a more scientific and psychological view of the brain.

Karl Spencer Lashley

Lashley's works and theories that follow are summarized in his book Brain Mechanisms and Intelligence. Lashley's theory of the Engram was the driving force for much of his research. An engram was believed to be a part of the brain where a specific memory was stored. He continued to use the training/ablation method that Franz had taught him. He would train a rat to learn a maze and then use systematic lesions and removed sections of cortical tissue to see if the rat forgot what it had learned.

Through his research with the rats, he learned that forgetting was dependent on the amount of tissue removed and not where it was removed from. He called this mass action and he believed that it was a general rule that governed how brain tissue would respond, independent of the type of learning. But we know now that mass action was a misinterpretation of his empirical results, because in order to run a maze the rats required multiple cortical areas. Cutting into small individual parts alone will not impair the rats' brains much, but taking large sections removes multiple cortical areas at one time, affecting various functions such as sight, motor coordination and memory, making the animal unable to run a maze properly.

Lashley also proposed that a portion of a functional area could carry out the role of the entire area, even when the rest of the area has been removed. He called this phenomenon equipotentiality. We know now that he was seeing evidence of plasticity in the brain: within certain constraints the brain has the ability for certain areas to take over the functions of other areas if those areas should fail or be removed - although not to the extent initially argued by Lashley.

Approaches

Experimental neuropsychology is an approach that uses methods from experimental psychology to uncover the relationship between the nervous system and cognitive function. The majority of work involves studying healthy humans in a laboratory setting, although a minority of researchers may conduct animal experiments. Human work in this area often takes advantage of specific features of our nervous system (for example that visual information presented to a specific visual field is preferentially processed by the cortical hemisphere on the opposite side) to make links between neuroanatomy and psychological function.

Clinical neuropsychology is the application of neuropsychological knowledge to the assessment (see neuropsychological test and neuropsychological assessment), management, and rehabilitation of people who have suffered illness or injury (particularly to the brain) which has caused neurocognitive problems. In particular they bring a psychological viewpoint to treatment, to understand how such illness and injury may affect and be affected by psychological factors. They also can offer an opinion as to whether a person is demonstrating difficulties due to brain pathology or as a consequence of an emotional or another (potentially) reversible cause or both. For example, a test might show that both patients X and Y are unable to name items that they have been previously exposed to within the past 20 minutes (indicating possible dementia). If patient Y can name some of them with further prompting (e.g. given a categorical clue such as being told that the item they could not name is a fruit), this allows a more specific diagnosis than simply dementia (Y appears to have the vascular type which is due to brain pathology but is usually at least somewhat reversible). Clinical neuropsychologists often work in hospital settings in an interdisciplinary medical team; others work in private practice and may provide expert input into medico-legal proceedings.

Cognitive neuropsychology is a relatively new development and has emerged as a distillation of the complementary approaches of both experimental and clinical neuropsychology. It seeks to understand the mind and brain by studying people who have suffered brain injury or neurological illness. One model of neuropsychological functioning is known as functional localization. This is based on the principle that if a specific cognitive problem can be found after an injury to a specific area of the brain, it is possible that this part of the brain is in some way involved. However, there may be reason to believe that the link between mental functions and neural regions is not so simple. An alternative model of the link between mind and brain, such as parallel processing, may have more explanatory power for the workings and dysfunction of the human brain. Yet another approach investigates how the pattern of errors produced by brain-damaged individuals can constrain our understanding of mental representations and processes without reference to the underlying neural structure. A more recent but related approach is cognitive neuropsychiatry which seeks to understand the normal function of mind and brain by studying psychiatric or mental illness.

Connectionism is the use of artificial neural networks to model specific cognitive processes using what are considered to be simplified but plausible models of how neurons operate. Once trained to perform a specific cognitive task these networks are often damaged or 'lesioned' to simulate brain injury or impairment in an attempt to understand and compare the results to the effects of brain injury in humans.

Functional neuroimaging uses specific neuroimaging technologies to take readings from the brain, usually when a person is doing a particular task, in an attempt to understand how the activation of particular brain areas is related to the task. In particular, the growth of methodologies to employ cognitive testing within established functional magnetic resonance imaging (fMRI) techniques to study brain-behavior relations is having a notable influence on neuropsychological research.

In practice these approaches are not mutually exclusive and most neuropsychologists select the best approach or approaches for the task to be completed.

Methods and tools

Standardized neuropsychological tests
These tasks have been designed so the performance on the task can be linked to specific neurocognitive processes. These tests are typically standardized, meaning that they have been administered to a specific group (or groups) of individuals before being used in individual clinical cases. The data resulting from standardization are known as normative data. After these data have been collected and analyzed, they are used as the comparative standard against which individual performances can be compared. Examples of neuropsychological tests include: the Wechsler Memory Scale (WMS), the Wechsler Adult Intelligence Scale (WAIS), Boston Naming Test, the Wisconsin Card Sorting Test, the Benton Visual Retention Test, and the Controlled Oral Word Association.
Brain scans
The use of brain scans to investigate the structure or function of the brain is common, either as simply a way of better assessing brain injury with high resolution pictures, or by examining the relative activations of different brain areas. Such technologies may include fMRI (functional magnetic resonance imaging) and positron emission tomography (PET), which yields data related to functioning, as well as MRI (magnetic resonance imaging) and computed axial tomography (CAT or CT), which yields structural data.
Global Brain Project
Brain models based on mouse and monkey have been developed based on theoretical neuroscience involving working memory and attention, while mapping brain activity based on time constants validated by measurements of neuronal activity in various layers of the brain. These methods also map to decision states of behavior in simple tasks that involve binary outcomes.
Electrophysiology
The use of electrophysiological measures designed to measure the activation of the brain by measuring the electrical or magnetic field produced by the nervous system. This may include electroencephalography (EEG) or magneto-encephalography (MEG).
Experimental tasks
The use of designed experimental tasks, often controlled by computer and typically measuring reaction time and accuracy on a particular tasks thought to be related to a specific neurocognitive process. An example of this is the Cambridge Neuropsychological Test Automated Battery (CANTAB) or CNS Vital Signs (CNSVS).

Lie group

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Lie_group In mathematics , a Lie gro...