John Wilkes Booth was the son of prominent, wealthy actors. He, too, became an actor and was so popular, he was one of the first to have his clothes ripped off by fans. Hulton Archive/Getty hide caption
Psychology is the systematic investigation of the human mind, including behavior and cognition. It thus encompasses both normal and abnormal behavior. On the other hand, psychiatry is a branch of medicine dealing with mental illness.
The Assessment section first addresses psychiatric and psychological evaluations. 1  Although the. disciplines of psychiatry and psychology differ in training and expertise in some ways, in Pennsylvania. both psychiatrists and psychologists can serve as âprescribersâ of community-based behavioral health. services.