American Psychological Association

The American Psychological Association (APA) is the largest scientific and professional organization of psychologists in the United States and the world, founded on July 8, 1892, at Clark University by G. Stanley Hall and around 26-30 psychologists.[1][2][3] It has grown to over 190,000 members across 54 divisions, promoting psychology as a science and profession while advancing human welfare, with headquarters in Washington, D.C.[1][3][7] The APA publishes journals, sets ethical standards, and advocates for mental health.[3][4]