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https://en.wikipedia.org/wiki/Psychohistory

Psychohistory is an amalgam of psychology, history, and related social sciences and the humanities. It examines the "why" of history, especially the difference between stated intention and actual behavior. Psychobiography, childhood, group dynamics, mechanisms of psychic defense, dreams, and creativity are primary areas of research. It works to combine the insights of psychology, especially psychoanalysis, with the research methodology of the social sciences and humanities to understand the emotional origin of the behavior of individuals, groups and nations, past and present. Work in the field has been done in the areas of childhood, creativity, dreams, family dynamics, overcoming adversity, personality, political and presidential psychobiography. There are major psychohistorical studies of studies of anthropology, art, ethnology, history, politics and political science, and much else.

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