The APA Task Force on Deceptive and Indirect Methods (or Techniques) of Persuasion and Control (DIMPAC/DITPACT) was formed at the request of the American Psychological Association (APA) in 1983. The APA asked Margaret Singer, a leading theorist in cults and coercive persuasion, to chair a task force to "expose cult methods and tactics". Some examples that led to the task force's creation were the Manson family murders, Patty Hearst kidnapping, and the Jonestown massacre.