Abnormal Psychology (Encyclopedia of Psychology)
The subfield of psychology concerned with the study of abnormal behavior.
Abnormal behavior is defined as behavior that is considered to be maladaptive or deviant by the social culture in which it occurs. Though disagreement exists regarding which particular behaviors can be classified as abnormal, psychologists have defined several criteria for purposes of classification. One is that the behavior occurs infrequently and thus deviates from statistical norms. Another is that the behavior deviates from social norms of acceptable behavior. A third is that the behavior is maladaptive, that it has adverse affects on the individual or on the individual's social group. Lastly, abnormality may be defined based on the subjective feelings of misery, depression, or anxiety of an individual rather than any behavior he exhibits.
The Diagnostic and Statistical Manual of Mental Disorders, 4th edition (DSM-IV), is a classification system of abnormal behaviors which aids psychologists and other mental health professionals in diagnosing and treating mental disorders. DSM-IV includes the major categories of abnormal behavior which are anxiety disorders, such as obsessive-compulsive disorders and phobias; affective disorders, which are disturbances of mood such as depression; schizophrenic disorders, which...
(The entire section is 367 words.)
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