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Biosocial Theory is a theory in behavioral and social science that reduces personality disorders and mental illnesses and disabilities to biologically-determined personality traits reacting to environmental stimuli. ==Biosocial theory in DBT== It is common for therapists using a Dialectical Behavioral Therapy (DBT) model in the treatment of Borderline personality disorder to stress to clients that causes for their condition come both from a biological propensity to their emotional state, and an invalidating environment, that, by its negative reactions, reinforces their dysfunctional behavior. A traumatic event can start the emotional or interpersonal disregulation that spawns a vicious cycle of increased negative behavior as the person continues to react to the environment's invalidation and the environment increasingly devalues them. "DBT is based on a biosocial theory of personality functioning in which BPD is seen as a biological disorder of emotional regulation. The disorder is characterized by heightened sensitivity to emotion, increased emotional in-tensity () and a slow return to emotional baseline. Characteristic behaviors and emotional experiences associated with BPD theoretically result from the expression of this biological dysfunction in a social environment experienced as invalidating by the borderline patient."〔Murphy, Elizabeth T., and Gunderson, John. (A Promising Treatment ) for Borderline Personality Disorder, McLean Hospital Psychiatic Update, January 1999.〕 The importance of stressing the biosocial theory to the client in therapy is that the information becomes a tool of validation in itself, offering the client the option of seeing their problems as no fault of their own while also offering them the possibility if taking responsibility for future change. "The biosocial theory suggests that BPD is a disorder of self-regulation, and particularly of emotional regulation, which results from biological irregularities combined with certain dysfunctional environments, as well as from their interaction and transaction over time"〔Linehan, M. M. (1993a) Cognitive–Behavioral Treatment of Borderline Personality Disorder. New York: Guilford Press.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「biosocial theory」の詳細全文を読む スポンサード リンク
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