a pro enterprise formed in 1917 whenever science-based psychologists detached from the American Psychological Association in order to encourage teaching and approval guidelines for the practice of science-based psychology. The AACP came back to the APA in 1919 as the Section of Scientific Psychology, the APA’s original special interest team
AMERICAN ASSOCIATION OF CLINICAL PSYCHOLOGISTS (AACP): “All professionals wishing to practice clinical psychology must first be certified by the AACP.”