title: Behaviour modification.
abstract: The first part of the article outlines how behaviour, both normal and 'abnormal', is a learned phenomenon and briefly looks at the various contingencies of learning that determine which behaviours develop. Many types of psychological disorder can be accounted for by such an approach, and several examples of how behavioural disorders develop are outoined. Finally, a rationale for treating certain types of these behavioural disorders is presented.
mesh_terms: D001007:Anxiety; D001521:Behavior Therapy; D005239:Fear; D006801:Humans; D007858:Learning; D001523:Mental Disorders / Q000628:therapy; D012054:Reinforcement, Psychology; D012931:Social Environment