Three explanations explaining the difficulties Psychologists have defining abnormality (Statistical Infrequency, Failure to Function Adequately, Deviation from Ideal Mental Health, Deviation from...

Three explanations explaining the difficulties Psychologists have defining abnormality

(Statistical Infrequency, Failure to Function Adequately, Deviation from Ideal Mental

Health, Deviation from Social Norms, Maladaptiveness)

also could you reccommend reliable source of research such as books or reliable websites