National Psychological Association/Society

American Psychological Association
Based in Washington, DC, the American Psychological Association (APA) is a scientific and professional organization that represents psychology in the United States. With 150,000 members, APA is the largest association of psychologists worldwide.

Registration/Licensing Board

Association of State and Provincial Psychology Boards
The Association of State and Provincial Psychology Boards (ASPPB) is the alliance of state, provincial, and territorial agencies responsible for the licensure and certification of psychologists throughout the United States and Canada. ASPPB was formed in 1961 to serve psychology boards in the two countries. Much of the impetus for its founding related to mobility for practitioners. By consensus, the first step was to create and maintain a standardized written Examination for Professional Practice in Psychology (EPPP). ASPPB has done so since 1965.