Bill Powers discusses each of these acronyms: Control Theory, Perceptual Control Theory, Reality Therapy, The Method of Levels, and The International Association for Applied Control Theory.
Joseph W. Barter, Suellen Li, Tatyana Sukharnikova, Mark A. Rossi, Ryan A. Bartholomew, and Henry H. Yin (2015) https://www.researchgate.net/profile/Mark-Rossi-5/publication/272165203_Basal_Ganglia_Outputs_Map_Instantaneous_Position_Coordinates_during_Behavior/links/54dcbf590cf25b09b912c829/Basal-Ganglia-Outputs-Map-Instantaneous-Position-Coordinates-during-Behavior.pdf