The American Psychological Association is the main professional organization of psychologists in the United States, and the largest psychological association in the world. It has over 157,000 members, including scientists, educators, clinicians,... Wikipedia
Founder: G. Stanley Hall
Headquarters: Washington, D.C.
Founded: July 1892, Clark University, Worcester, MA
Budget: around $125 million
CEO: Arthur C. Evans, Jr
President: Cynthia de las Fuentes