The American Psychological Association is the largest scientific and professional organization representing psychology in the United States. Its mission is to advance the creation, communication and application of psychological knowledge to benefit society and improve people's lives.
The Association for Psychological Science is a nonprofit organization dedicated to the advancement of scientific psychology and its representation at the national and international level.
The world's oldest international organization of psychologists, the goal of the IAAP is to promote the science and practice of applied psychology and to facilitate interaction and communication about applied psychology around the world.
