Abnormal behavior is aberrant, maladaptive, or personally distressful over a reasonably lengthy period of time.
When used in a psychosocial setting, the phrase "abnormal behavior" alludes to something more particular. The American Psychological Association defines abnormal conduct as "behavior that is aberrant or statistically uncommon within a specific culture, or that is maladaptive or destructive to an individual or those around that individual." The DSM-5 defines abnormal conduct by four broad criteria: maladaptive behavior, emotional suffering, statistical rarity, and violation of social norms.
There are numerous probable explanations because many distinct behaviors might be regarded aberrant and fall into one of the stated categories. Abnormal behaviors could be caused by a psychological disorder, the situation a person finds himself in, or other factors.
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