Psychologists are health professionals who have training and expertise
in human behavior and psychological health. Psychologists are not medical
doctors, but they hold a doctor of psychology (PsyD degree) or doctor of
philosophy (PhD degree) in clinical psychology, counseling, or school
psychology.
Psychologists evaluate and treat people who have mental health
problems, such as depression. Psychologists also provide counseling and other
mental health services. Some states allow psychologists to prescribe medicine.
Psychologists are licensed in the state in which they
practice.