American Psychological Association

American Psychological Association
http://www.apa.org

The American Psychological Association (APA), in Washington, DC, is the largest scientific and professional organization representing psychology in the United States and is the world's largest association of psychologists.

APA's membership includes more than 159,000 researchers, educators, clinicians, consultants, and students. Through its divisions in 50 subfields of psychology and affiliations with 59 state, territorial, and Canadian provincial associations, APA works to advance psychology as a science, as a profession, and as a means of promoting human welfare.