Psychology is the scientific study of the mental functions and behaviors of humans (as well as animals). People who work in the field of psychology are referred to as psychologists. The field of psychology encompasses many more specific subfields including biological, clinical, cognitive, comparative, consulting, counseling, developmental, educational, industrial-organizational, personality, quantitative, school, and social psychology. Earning a master's degree in psychology opens up many career options such as clinical work, counseling, and social work. If you are a student looking for the best college in Illinois to get a master's in psychology, a look at these graduate programs in psychology at the University of Illinois at Urbana-Champaign, Illinois State University, and DePaul University may help you make a decision