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 four main differences between psychiatrists and psychologists are: Psychiatrists are medical doctors, psychologists are not. Psychiatrists prescribe medication, psychologists canât. Psychiatrists tend to treat complex and serious mental illness, psychologists tend to treat less serious conditions. You need a referral from your GP to see a psychiatrist, while you donât for a psychologist.