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Research into music and emotion seeks to understand the psychological relationship between human affect and music. The field, a branch of music psychology,
covers numerous areas of study, including the nature of emotional
reactions to music, how characteristics of the listener may determine
which emotions are felt, and which components of a musical composition
or performance may elicit certain reactions. The research draws upon,
and has significant implications for, such areas as philosophy, musicology, music therapy, music theory and aesthetics, as well as the acts of musical composition and of musical performance.
Philosophical approaches
Appearance emotionalism
Two of the most influential philosophers in the aesthetics of music are Stephen Davies and Jerrold Levinson.
Davies calls his view of the expressiveness of emotions in music
"appearance emotionalism", which holds that music expresses emotion
without feeling it. Objects can convey emotion because their structures
can contain certain characteristics that resemble emotional expression.
"The resemblance that counts most for music's expressiveness ... is
between music's temporally unfolding dynamic structure and configurations of human behaviour associated with the expression of emotion." The observer can note emotions from the listener's posture, gait, gestures, attitude, and comportment.
Associations between musical features and emotion differ among
individuals. Appearance emotionalism claims many listeners' perceiving
associations constitutes the expressiveness of music. Which musical
features are more commonly associated with which emotions is part of music psychology.
Davies claims that expressiveness is an objective property of music
and not subjective in the sense of being projected into the music by the
listener. Music's expressiveness is certainly response-dependent, i.e.
it is realized in the listener's judgement. Skilled listeners very
similarly attribute emotional expressiveness to a certain piece of
music, thereby indicating according to Davies (2006) that the
expressiveness of music is somewhat objective because if the music
lacked expressiveness, then no expression could be projected into it as a
reaction to the music.
The process theory
The philosopher Jenefer Robinson
assumes the existence of a mutual dependence between cognition and
elicitation in her description of 'emotions as process, music as
process' theory (or 'process' theory). Robinson argues that the process
of emotional elicitation begins with an 'automatic, immediate response
that initiates motor and autonomic activity and prepares us for possible
action' causing a process of cognition that may enable listeners to
'name' the felt emotion. This series of events continually exchanges
with new, incoming information. Robinson argues that emotions may
transform into one another, causing blends, conflicts, and ambiguities
that make impede describing with one word the emotional state that one
experiences at any given moment; instead, inner feelings are better
thought of as the products of multiple emotional 'streams'. Robinson
argues that music is a series of simultaneous processes, and that it
therefore is an ideal medium for mirroring such more 'cognitive' aspects
of emotion as musical themes' 'desiring' resolution or leitmotif's
mirrors memory processes. These simultaneous musical processes can
reinforce or conflict with each other and thus also express the way one
emotion 'morphs into another over time'.
Conveying emotion through music
The
ability to perceive emotion in music is said to develop early in
childhood, and improve significantly throughout development.
The capacity to perceive emotion in music is also subject to cultural
influences, and both similarities and differences in emotion perception
have been observed in cross-cultural studies.
Empirical research has looked at which emotions can be conveyed as
well as what structural factors in music help contribute to the
perceived emotional expression. There are two schools of thought on how
we interpret emotion in music. The cognitivists'
approach argues that music simply displays an emotion, but does not
allow for the personal experience of emotion in the listener. Emotivists argue that music elicits real emotional responses in the listener.
It has been argued that the emotion experienced from a piece of
music is a multiplicative function of structural features, performance
features, listener features, contextual features and extra-musical
features of the piece, shown as:
- Experienced Emotion = Structural features × Performance features × Listener features × Contextual features × Extra-Musical features
where:
- Structural features = Segmental features × Suprasegmental features
- Performance features = Performer skill × Performer state
- Listener features = Musical expertise × Stable disposition × Current motivation
- Contextual features = Location × Event
- Extra-musical features = Non-auditory features × Expertise
Structural features
Structural
features are divided into two parts, segmental features and
suprasegmental features. Segmental features are the individual sounds or
tones that make up the music; this includes acoustic structures such as
duration, amplitude, and pitch. Suprasegmental features are the foundational structures of a piece, such as melody, tempo and rhythm. There are a number of specific musical features that are highly associated with particular emotions. Within the factors affecting emotional expression in music, tempo is typically regarded as the most important, but a number of other factors, such as mode, loudness, and melody, also influence the emotional valence of the piece.
Structural Feature |
Definition |
Associated Emotions
|
Tempo |
The speed or pace of a musical piece |
Fast tempo: excitement, anger. Slow tempo: sadness, serenity.
|
Mode |
The type of scale |
Major tonality: happiness, joy. Minor tonality: sadness.
|
Loudness |
The physical strength and amplitude of a sound |
Intensity, power, or anger
|
Melody |
The linear succession of musical tones that the listener perceives as a single entity |
Complementing harmonies: happiness, relaxation, serenity. Clashing harmonies: excitement, anger, unpleasantness.
|
Rhythm |
The regularly recurring pattern or beat of a song |
Smooth/consistent rhythm: happiness, peace. Rough/irregular rhythm: amusement, uneasiness. Varied rhythm: joy.
|
Some studies find that perception of basic emotional features are a cultural universal, though people can more easily perceive emotion, and perceive more nuanced emotion, in music from their own culture.
Music has a direct connection to emotional states present in
human beings. Different musical structures have been found to have a
relationship with physiological responses. Research has shown that
suprasegmental structures such as tonal space, specifically dissonance,
create unpleasant negative emotions in participants. The emotional
responses were measured with physiological assessments, such as skin
conductance and electromyographic signals (EMG), while participants
listened to musical excerpts.
Further research on psychophysiological measures pertaining to music
were conducted and found similar results; musical structures of rhythmic
articulation, accentuation, and tempo were found to correlate strongly
with physiological measures, the measured used here included heart rate
and respiratory monitors that correlated with self-report
questionnaires.
Music also affects socially-relevant memories, specifically
memories produced by nostalgic musical excerpts (e.g., music from a
significant time period in one’s life, like music listened to on road
trips). Musical structures are more strongly interpreted in certain
areas of the brain when the music evokes nostalgia. The interior frontal
gyrus, substantia nigra, cerebellum, and insula were all identified to
have a stronger correlation with nostalgic music than not.
Brain activity is a very individualized concept with many of the
musical excerpts having certain effects based on individuals’ past life
experiences, thus this caveat should be kept in mind when generalizing
findings across individuals.
Performance features
Performance
features refer to the manner in which a piece of music is executed by
the performer(s). These are broken into two categories: performer
skills, and performer state. Performer skills are the compound ability
and appearance of the performer; including physical appearance,
reputation, and technical skills. The performer state is the
interpretation, motivation, and stage presence of the performer.
Listener features
Listener
features refer to the individual and social identity of the
listener(s). This includes their personality, age, knowledge of music,
and motivation to listen to the music.
Contextual features
Contextual
features are aspects of the performance such as the location and the
particular occasion for the performance (i.e., funeral, wedding, dance).
Extra-musical
features refer to extra-musical information detached from auditory
music signals, such as the genre or style of music.
These different factors influence expressed emotion at different
magnitudes, and their effects are compounded by one another. Thus,
experienced emotion is felt to a stronger degree if more factors are
present. The order the factors are listed within the model denotes how
much weight in the equation they carry. For this reason, the bulk of
research has been done in structural features and listener features.
Conflicting cues
Which
emotion is perceived is dependent on the context of the piece of music.
Past research has argued that opposing emotions like happiness and
sadness fall on a bipolar scale, where both cannot be felt at the same
time.
More recent research has suggested that happiness and sadness are
experienced separately, which implies that they can be felt
concurrently.
One study investigated the latter possibility by having participants
listen to computer-manipulated musical excerpts that have mixed cues
between tempo and mode.
Examples of mix-cue music include a piece with major key and slow
tempo, and a minor-chord piece with a fast tempo. Participants then
rated the extent to which the piece conveyed happiness or sadness. The
results indicated that mixed-cue music conveys both happiness and
sadness; however, it remained unclear whether participants perceived
happiness and sadness simultaneously or vacillated between these two
emotions.
A follow-up study was done to examine these possibilities. While
listening to mixed or consistent cue music, participants pressed one
button when the music conveyed happiness, and another button when it
conveyed sadness. The results revealed that subjects pressed both buttons simultaneously during songs with conflicting cues.
These findings indicate that listeners can perceive both happiness and
sadness concurrently. This has significant implications for how the
structural features influence emotion, because when a mix of structural
cues is used, a number of emotions may be conveyed.
Specific listener features
Development
Studies
indicate that the ability to understand emotional messages in music
starts early, and improves throughout child development.
Studies investigating music and emotion in children primarily play a
musical excerpt for children and have them look at pictorial expressions
of faces. These facial expressions display different emotions and
children are asked to select the face that best matches the music's
emotional tone.
Studies have shown that children are able to assign specific emotions
to pieces of music; however, there is debate regarding the age at which
this ability begins.
Infants
An
infant is often exposed to a mother's speech that is musical in nature.
It is possible that the motherly singing allows the mother to relay
emotional messages to the infant. Infants also tend to prefer positive speech to neutral speech as well as happy music to negative music. It has also been posited that listening to their mother's singing may play a role in identity formation.
This hypothesis is supported by a study that interviewed adults and
asked them to describe musical experiences from their childhood.
Findings showed that music was good for developing knowledge of emotions
during childhood.
Pre-school children
These
studies have shown that children at the age of 4 are able to begin to
distinguish between emotions found in musical excerpts in ways that are
similar to adults. The ability to distinguish these musical emotions seems to increase with age until adulthood.
However, children at the age of 3 were unable to make the distinction
between emotions expressed in music through matching a facial expression
with the type of emotion found in the music. Some emotions, such as anger and fear, were also found to be harder to distinguish within music.
Elementary-age children
In
studies with four-year-olds and five-year-olds, they are asked to label
musical excerpts with the affective labels "happy", "sad", "angry", and
"afraid".
Results in one study showed that four-year-olds did not perform above
chance with the labels "sad" and "angry", and the five-year-olds did not
perform above chance with the label "afraid".
A follow-up study found conflicting results, where five-year-olds
performed much like adults. However, all ages confused categorizing
"angry" and "afraid".
Pre-school and elementary-age children listened to twelve short
melodies, each in either major or minor mode, and were instructed to
choose between four pictures of faces: happy, contented, sad, and angry.
All the children, even as young as three years old, performed above
chance in assigning positive faces with major mode and negative faces
with minor mode.
Personality effects
Different
people perceive events differently based upon their individual
characteristics. Similarly, the emotions elicited by listening to
different types of music seem to be affected by factors such as
personality and previous musical training.
People with the personality type of agreeableness have been found to
have higher emotional responses to music in general. Stronger sad
feelings have also been associated with people with personality types of
agreeableness and neuroticism. While some studies have shown that
musical training can be correlated with music that evoked mixed feelings as well as higher IQ and test of emotional comprehension scores, other studies refute the claim that musical training affects perception of emotion in music.
It is also worth noting that previous exposure to music can affect
later behavioral choices, schoolwork, and social interactions.
Therefore, previous music exposure does seem to have an effect on the
personality and emotions of a child later in their life, and would
subsequently affect their ability to perceive as well as express
emotions during exposure to music. Gender, however, has not been shown
to lead to a difference in perception of emotions found in music.
Further research into which factors affect an individual's perception
of emotion in music and the ability of the individual to have
music-induced emotions are needed.
Eliciting emotion through music
Along
with the research that music conveys an emotion to its listener(s), it
has also been shown that music can produce emotion in the listener(s).
This view often causes debate because the emotion is produced within
the listener, and is consequently hard to measure. In spite of
controversy, studies have shown observable responses to elicited
emotions, which reinforces the Emotivists' view that music does elicit
real emotional responses.
Responses to elicited emotion
The
structural features of music not only help convey an emotional message
to the listener, but also may create emotion in the listener.
These emotions can be completely new feelings or may be an extension
of previous emotional events. Empirical research has shown how listeners
can absorb the piece's expression as their own emotion, as well as
invoke a unique response based on their personal experiences.
Basic emotions
In
research on eliciting emotion, participants report personally feeling a
certain emotion in response to hearing a musical piece.
Researchers have investigated whether the same structures that conveyed
a particular emotion could elicit it as well. The researchers presented
excerpts of fast tempo, major mode music and slow tempo, minor tone
music to participants; these musical structures were chosen because they
are known to convey happiness and sadness respectively.
Participants rated their own emotions with elevated levels of
happiness after listening to music with structures that convey happiness
and elevated sadness after music with structures that convey sadness.
This evidence suggests that the same structures that convey emotions
in music can also elicit those same emotions in the listener.
In light of this finding, there has been particular controversy about music eliciting negative emotions. Cognitivists
argue that choosing to listen to music that elicits negative emotions
like sadness would be paradoxical, as listeners would not willingly
strive to induce sadness. However, emotivists
purport that music does elicit negative emotions, and listeners
knowingly choose to listen in order to feel sadness in an impersonal
way, similar to a viewer's desire to watch a tragic film.
The reasons why people sometimes listen to sad music when feeling sad
has been explored by means of interviewing people about their
motivations for doing so. As a result of this research it has indeed
been found that people sometimes listen to sad music when feeling sad to
intensify feelings of sadness. Other reasons for listening to sad music
when feeling sad were; in order to retrieve memories, to feel closer to
other people, for cognitive reappraisal, to feel befriended by the music, to distract oneself, and for mood enhancement.
Researchers have also found an effect between one's familiarity with a piece of music and the emotions it elicits.
In one study, half of participants were played twelve random musical
excerpts one time, and rated their emotions after each piece. The other
half of the participants listened to twelve random excerpts five times,
and started their ratings on the third repetition. Findings showed that
participants who listened to the excerpts five times rated their
emotions with higher intensity than the participants who listened to
them only once. This suggests that familiarity with a piece of music increases the emotions experienced by the listener.
Emotional memories and actions
Music may not only elicit new emotions, but connect listeners with other emotional sources. Music serves as a powerful cue to recall emotional memories back into awareness.
Because music is such a pervasive part of social life, present in
weddings, funerals and religious ceremonies, it brings back emotional
memories that are often already associated with it.
Music is also processed by the lower, sensory levels of the brain,
making it impervious to later memory distortions. Therefore creating a
strong connection between emotion and music within memory makes it
easier to recall one when prompted by the other.
Music can also tap into empathy, inducing emotions that are assumed to
be felt by the performer or composer. Listeners can become sad because
they recognize that those emotions must have been felt by the composer, much as the viewer of a play can empathize for the actors.
Listeners may also respond to emotional music through action.
Throughout history music was composed to inspire people into specific
action - to march, dance, sing or fight. Consequently, heightening the
emotions in all these events. In fact, many people report being unable
to sit still when certain rhythms are played, in some cases even
engaging in subliminal actions when physical manifestations should be
suppressed.
Examples of this can be seen in young children's spontaneous outbursts
into motion upon hearing music, or exuberant expressions shown at
concerts.
Juslin & Västfjäll's BRECVEM model
Juslin & Västfjäll developed a model of seven ways in which music can elicit emotion, called the BRECVEM model.
Brain Stem Reflex: 'This refers to a process whereby an
emotion is induced by music because one or more fundamental acoustical
characteristics of the music are taken by the brain stem to signal a
potentially important and urgent event. All other things being equal,
sounds that are sudden, loud, dissonant, or feature fast temporal
patterns induce arousal or feelings of unpleasantness in
listeners...Such responses reflect the impact of auditory sensations –
music as sound in the most basic sense.'
Rhythmic Entrainment:
'This refers to a process whereby an emotion is evoked by a piece of
music because a powerful, external rhythm in the music influences some
internal bodily rhythm of the listener (e.g. heart rate), such that the
latter rhythm adjusts toward and eventually 'locks in' to a common
periodicity. The adjusted heart rate can then spread to other components
of emotion such as feeling, through proprioceptive feedback. This may
produce an increased level of arousal in the listener.'
Evaluative Conditioning: 'This refers to a process whereby
an emotion is induced by a piece of music simply because this stimulus
has been paired repeatedly with other positive or negative stimuli.
Thus, for instance, a particular piece of music may have occurred
repeatedly together in time with a specific event that always made you
happy (e.g., meeting your best friend). Over time, through repeated
pairings, the music will eventually come to evoke happiness even in the
absence of the friendly interaction.'
Emotional Contagion: 'This refers to a process whereby an
emotion is induced by a piece of music because the listener perceives
the emotional expression of the music, and then "mimics" this expression
internally, which by means of either peripheral feedback from muscles,
or a more direct activation of the relevant emotional representations in
the brain, leads to an induction of the same emotion.'
Visual Imagery: 'This refers to a process whereby an
emotion is induced in a listener because he or she conjures up visual
images (e.g., of a beautiful landscape) while listening to the music.'
Episodic memory: 'This refers to a process whereby an
emotion is induced in a listener because the music evokes a memory of a
particular event in the listener's life. This is sometimes referred to
as the "Darling, they are playing our tune" phenomenon.'
Musical expectancy: 'This refers to a process whereby an
emotion is induced in a listener because a specific feature of the music
violates, delays, or confirms the listener's expectations about the
continuation of the music.'
Musical expectancy
With
regards to violations of expectation in music several interesting
results have been found. It has for example been found that listening to
unconventional music may sometimes cause a meaning threat and result in
compensatory behaviour in order to restore meaning.
Aesthetic Judgement and BRECVEMA
In 2013, Juslin created an additional aspect to the BRECVEM model called aesthetic judgement.
This is the criteria which each individual has as a metric for music's
aesthetic value. This can involve a number of varying personal
preferences, such as the message conveyed, skill presented or novelty of
style or idea.
Comparison of conveyed and elicited emotions
Evidence for emotion in music
There
has been a bulk of evidence that listeners can identify specific
emotions with certain types of music, but there has been less concrete
evidence that music may elicit emotions. This is due to the fact that elicited emotion is subjective; and thus, it is difficult to find a valid criterion to study it.
Elicited and conveyed emotion in music is usually understood from
three types of evidence: self-report, physiological responses, and
expressive behavior. Researchers use one or a combination of these
methods to investigate emotional reactions to music.
Self-report
The
self-report method is a verbal report by the listener regarding what
they are experiencing. This is the most widely used method for studying
emotion and has shown that people identify emotions and personally
experience emotions while listening to music.
Research in the area has shown that listeners' emotional responses are
highly consistent. In fact, a meta-analysis of 41 studies on music
performance found that happiness, sadness, tenderness, threat, and anger
were identified above chance by listeners. Another study compared untrained listeners to musically trained listeners.
Both groups were required to categorize musical excerpts that conveyed
similar emotions. The findings showed that the categorizations were not
different between the trained and untrained; thus demonstrating that
the untrained listeners are highly accurate in perceiving emotion.
It is more difficult to find evidence for elicited emotion, as it
depends solely on the subjective response of the listener. This leaves
reporting vulnerable to self-report biases such as participants
responding according to social prescriptions or responding as they think
the experimenter wants them to.
As a result, the validity of the self-report method is often
questioned, and consequently researchers are reluctant to draw
definitive conclusions solely from these reports.
Physiological responses
Emotions
are known to create physiological, or bodily, changes in a person,
which can be tested experimentally. Some evidence shows one of these
changes is within the nervous system.
Arousing music is related to increased heart rate and muscle tension;
calming music is connected to decreased heart rate and muscle tension,
and increased skin temperature.
Other research identifies outward physical responses such as shivers or
goose bumps to be caused by changes in harmony and tears or lump-in-the-throat provoked by changes in melody. Researchers test these responses through the use of instruments for physiological measurement, such as recording pulse rate.
Expressive behavior
People are also known to show outward manifestations of their emotional states while listening to music. Studies using facial electromyography (EMG) have found that people react with subliminal facial expressions when listening to expressive music.
In addition, music provides a stimulus for expressive behavior in many
social contexts, such as concerts, dances, and ceremonies.
Although these expressive behaviors can be measured experimentally,
there have been very few controlled studies observing this behavior.
Strength of effects
Within
the comparison between elicited and conveyed emotions, researchers have
examined the relationship between these two types of responses to
music. In general, research agrees that feeling and perception ratings
are highly correlated, but not identical.
More specifically, studies are inconclusive as to whether one response
has a stronger effect than the other, and in what ways these two
responses relate.
Conveyed more than elicited
In one study, participants heard a random selection of 24 excerpts, displaying six types of emotions, five times in a row.
Half the participants described the emotions the music conveyed, and
the other half responded with how the music made them feel. The results
found that emotions conveyed by music were more intense than the
emotions elicited by the same piece of music.
Another study investigated under what specific conditions strong
emotions were conveyed. Findings showed that ratings for conveyed
emotions were higher in happy responses to music with consistent cues
for happiness (i.e., fast tempo and major mode), for sad responses to
music with consistent cues for sadness (i.e., slow tempo and minor
mode,) and for sad responses in general. These studies suggest that people can recognize the emotion displayed in music more readily than feeling it personally.
Sometimes conveyed, sometimes elicited
Another
study that had 32 participants listen to twelve musical pieces and
found that the strength of perceived and elicited emotions were
dependent on the structures of the piece of music.
Perceived emotions were stronger than felt emotions when listeners
rated for arousal and positive and negative activation. On the other
hand, elicited emotions were stronger than perceived emotions when
rating for pleasantness.
Elicited more than conveyed
In another study analysis revealed that emotional responses were stronger than the listeners' perceptions of emotions.
This study used a between-subjects design, where 20 listeners judged
to what extent they perceived four emotions: happy, sad, peaceful, and
scared. A separate 19 listeners rated to what extent they experienced
each of these emotions. The findings showed that all music stimuli
elicited specific emotions for the group of participants rating elicited
emotion, while music stimuli only occasionally conveyed emotion to the
participants in the group identifying which emotions the music conveyed.
Based on these inconsistent findings, there is much research left to be
done in order to determine how conveyed and elicited emotions are
similar and different. There is disagreement about whether music induces
'true' emotions or if the emotions reported as felt in studies are
instead just participants stating the emotions found in the music they
are listening to.
Music as a therapeutic tool
Music therapy as a therapeutic tool has been shown to be an effective
treatment for various ailments. Therapeutic techniques involve
eliciting emotions by listening to music, composing music or lyrics and
performing music.
Music therapy sessions may have the ability to help drug users
who are attempting to break a drug habit, with users reporting feeling
better able to feel emotions without the aid of drug use.
Music therapy may also be a viable option for people experiencing
extended stays in a hospital due to illness. In one study, music therapy
provided child oncology patients with enhanced environmental support
elements and elicited more engaging behaviors from the child.
When treating troubled teenagers, a study by Keen revealed that music
therapy has allowed therapists to interact with teenagers with less
resistance, thus facilitating self-expression in the teenager.
Music therapy has also shown great promise in individuals with
autism, serving as an emotional outlet for these patients. While other
avenues of emotional expression and understanding may be difficult for
people with autism, music may provide those with limited understanding
of socio-emotional cues a way of accessing emotion.