Forensic psychology explores emotional and behavioural issues that relate to the law and legal systems. Psychological knowledge is applied to the understanding of crime and criminal justice. This subject examines the role a forensic psychologist plays in the provision of advice to personnel within the justice system; the diagnosis and treatment of incarcerated and probationed offenders and techniques used to screen and evaluate personnel in the law enforcement and judicial systems. Germane topics in abnormal psychology, clinical psychology, personality and developmental psychology, psychometric testing and social psychology are dealt with insofar as they inform the tasks of psychologists in forensic settings.