Real-world application: Useful in the diagnosis of IDF and assessment
Limitation of statistical infrequency
Unusual characteristics can be positive: some characteristics like a high IQ do not necessarily make someone abnormal
limitation of statistical infrequency
Labelling (social stigma) may not be helpful, for example someone with low IQ may function perfectly fine and will not benefit from a label.
What is deviation from social norms?
Behaviour that goes against the implicit and explicit rules and socially accepted standards or expectations of a society and is therefore seen as abnormal.