Psychopathology

• The four ways of defining abnormality is: statistical deviation, deviation from social norms, failure to function adequately, deviation from ideal mental health.
• Statistical deviation- a person's trait, thinking or behaviour is classed as abnormal it is rare or statistically unusual.
• Using statistical deviation, characteristics can be reliably measured such as intelligence.
• Deviation from social norms- concerns behaviour that is different from the accepted to standards of behaviour in a community or society.