Modifies provisions relating to the practice of applied behavior analysis

HB 1964 updates Missouri's regulations for applied behavior analysis (ABA), a therapy commonly used to support individuals with autism spectrum disorders. The bill replaces outdated definitions with clear terms, specifying that ABA focuses on behavioral principles to improve social behaviors (excluding cognitive therapies, psychological testing, or counseling). It creates new licensing categories for ABA professionals, including "Licensed Behavior Analyst" and "Licensed Assistant Behavior Analyst," requiring certification from approved national bodies like the Behavior Analyst Certification Board. These changes directly affect ABA practitioners, the state committee of psychologists, and the division overseeing professional licensing.