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The American Association for Applied Psychology (AAAP) was founded in 1937 as a national organization for clinical, consulting, educational, and business/industrial psychologists. It lasted for only eight years, merging with the American Psychological Association in 1945. Although short-lived, it has been claimed that some of its work led to what is now the basis of certain models of training in the field.
https://en.wikipedia.org/wiki/American_Association_for_Applied_Psyc...