William T. (2008). Living Control Systems III: The fact of control. [Mathematical appendix by Dr. Richard Kennaway. Includes computer programs for the reader to demonstrate and experimentally test the theory.] New Canaan, CT: Benchmark Publications. . Powers, William. T., Clark, R. K., and McFarland, R. L. (1960). "A general feedback theory of human behavior [Part 1; Part 2]. Perceptual and Motor Skills 11, 71–88; 309–323. Powers, William T. and Runkel, Philip J. 2011. Dialogue concerning the two chief approaches to a science of life: Word pictures and correlations versus working models. Hayward, CA: Living Control Systems Publishing . Robertson, R. J. & Powers, W.T. (1990). Introduction to modern psychology: the control-theory view. Gravel Switch, KY: Control Systems Group. Robertson, R. J., Goldstein, D.M., Mermel, M., & Musgrave, M. (1999). Testing the self as a control system: Theoretical and methodological issues. Int. J. Human-Computer Studies, 50, 571–580. Runkel, Philip J[ulian]. 1990. Casting Nets and Testing Specimens: Two Grand Methods of Psychology. New York: Praeger. . [Repr. 2007, Hayward, CA: Living Control Systems Publishing .] Runkel, Philip J[ulian]. (2003). People as living things. Hayward, CA: Living Control Systems Publishing Taylor, Martin M. (1999). "Editorial: Perceptual Control Theory and its Application," International Journal of Human-Computer Studies, Vol 50, No. 6, June 1999, pp. 433–444. Sociology McClelland, Kent and Thomas J. Fararo, eds. (2006). Purpose, Meaning, and Action: Control Systems Theories in Sociology. New York: Palgrave Macmillan. McPhail, Clark. 1991. The Myth of the Madding Crowd. New York: Aldine de Gruyter. References External links Articles PCT for the Beginner by William T. Powers (2007) The Dispute Over Control theory by William T. Powers (1993) – requires access approval Demonstrations of perceptual control by Gary Cziko (2006) Audio Interview with William T. Powers on origin and history of PCT (Part One – 20060722 (58.7M) Interview with William T. Powers on origin and history of PCT (Part Two – 20070728 (57.7M) Videos Demonstration of a robot arm with visual servoing and pressure control based on principles of PCT Websites The International Association for Perceptual Control Systems – The IAPCT website. PCTWeb – Warren Mansell's comprehensive website on PCT. Living Control Systems Publishing – resources and books about PCT. Mind Readings – Rick Marken's website on PCT, with many interactive demonstrations. Method of Levels – Timothy Carey's website on the Method of Levels. Perceptual Robots – The PCT methodology and architecture applied to robotics. ResearchGate Project –