Psychology

The American Counseling Association is a not-for-profit, professional and educational organization that is dedicated to the growth and enhancement of the counseling profession.

The American Psychiatric Association, founded in 1844, is the world’s largest psychiatric organization.

The American Psychological Association is the largest scientific and professional organization representing psychology in the United States.

The Association for Psychological Science (previously the American Psychological Society) is a nonprofit organization dedicated to the advancement of scientific psychology and its representation at the national and international level.

Lead federal agency for research on mental disorders