It is a topic of BA 3rd sem. The branch of psychology investigates the psychology of crime with particular reference to the personality factors of the criminal. Criminal psychology is the study of the wills, thoughts, intentions and reactions of criminals. It is related to the field of criminal anthropology. The study goes deeply into what makes someone commit a crime, but also the reactions after the crime, on the run or in court. Criminal psychologists are often called up as witnesses in court cases to help the jury understand the mind of the criminal. Some types of Psychiatry also deal with aspects of criminal behaviour.