American Psychological Association

The American Psychological Association, in Washington, DC, is the largest scientific and professional organization representing psychology in the United States. APA's membership includes nearly 121,000 researchers, educators, clinicians, consultants, and students. Through its divisions in 54 subfields of psychology and affiliations with 60 state, territorial, and Canadian provincial associations, APA promotes the advancement of communication and application of psychological science and knowledge to benefit society and improve lives. APA is headquartered in Washington D.C.