Definitions of Abnormality

• Statistical Infrequency occurs when an individual has a lesson common characteristic, for example being more depressed or less intelligent than most of the population.
• Deviation from social norms - behaviour that is different from the accepted standards of behaviour in a community or society
• The ultimate aim of defining abnormality is to classify mental disorders and diagnose people experiencing mental health disorders.
• Failure to Function Adequately occurs when someone is unable to cope with ordinary demands of day-to-day living
• Deviation from ideal mental health occurs when someones does not meet a set of criteria for good mental health.