CGD Publishing

Abnormal psychology is the study of patterns of behaviour that deviate from the accepted norms of society, but abnormal psychology doesn’t study all deviations. Only those that can be classed as mental disorders.

Forensic psychology could be defined in many ways including:

The psychological study of crime.
The scientific behavioural study criminals.
The science of studying crime-related behaviour

Cognitive psychology- it’s important to know how a person’s mental processes can cause them to commit a crime.