Abnormality has 4 different definitions:
- Statistical Infrequency - any behaviour that is statistically infrequent, so is not found in very few people
- Deviation from Social Norms - not doing what most of the society do, so someone who deviates from social norms
- Failure to Function Adequately - not being able to function adequately, so for example not being able to hold down a job
- Deviation from Ideal Mental Health - not having ideal mental health, so for example seeing things that aren’t real or having a negative self-concept
