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Welcome to the Control Loop – the IAPCT newsletter. This newsletter shares updates on the latest developments in Perceptual Control Theory and is skillfully put together by Hugo Cristo Sant’Anna, one of our new active […]

Warren Mansell, University of Manchester, UK (2011)

William T. Powers

Richard S. Marken This paper describes a first step a building a working, closed-loop model of the macro economy.

Angelo J. KinickiKathryn J. L. JacobsonBenjamin M. GalvinGregory E. Prussia AbstractThis study uses a control theory to develop a multilevel systems model of leadership. The model outlines the processes that senior leaders can use to […]

Endorsing the IAPCT and Perceptual Control Theory (PCT) We are pleased to showcase organizations that have indicated their support and endorsement of the International Association for Perceptual Control Theory (IAPCT) and Perceptual Control Theory (PCT). […]

Background Since 2021, we have been working on the development of an accreditation procedure for Method of Levels practitioners. Our objective is to shape the procedure according to Perceptual Control Theory (PCT) principles and provide […]

Samuel Bagno ©1955 IRE (now IEEE). Reprinted, with permission, from IRE Convention Record, 1955 Part 4 “Computers, Information Theory, Automatic Control.This material is posted here with permission of the IEEE. Internal or personal use of […]

BOARD MEMBERS Eva de Hullu Open Universiteit. The Netherlands IAPCT PRESIDENT As assistant professor in the department of clinical psychology at the Open University in the Netherlands, I teach students therapeutic skills, heavily informed by […]

Maurice Martin Taylor died in the afternoon of Friday 17 March 2023, after several months of terminal illness. His 87th birthday was nine months prior, on 14 June 2022. By temperament and by education Martin […]

Hugh Petrie was a friend and supporter in his positions at Northwestern University, the University of Illinois, and the University of Buffalo, where he was Dean of the School of Education. Bill Powers dedicated Behavior: The […]

Bill’s sister Alice died on 5/22/22 at age 92. I think she might have been amused at the numerical alliteration. Her big brother Bill (1926-2013) was three years older. Her daughter Barbara writes, “Alice ran […]

Dick Robertson died on 24 March 2022. His son, Eric, wrote to us “in addition to believing in and supporting the work of the Control Systems Group, my Father greatly appreciated and valued the collaboration […]

[The following is from Barbara Powers (Bara).] My sister, Alison Mary Powers (Allie) of Lafayette, CO (formerly of Northbrook, IL) passed peacefully in the early hours of January 31, 2021. After a years-long battle with […]

Tributes to Bill upon his passing William T. Powers, the engineer/psychologist who developed Perceptual Control Theory (PCT) passed away on May 24, 2013 at the age of 86. He will be laid to rest next […]

Second volume of the Interdisciplinary Handbook of Perceptual Control Theory: Living in the Loop. Edited by Warren Mansell, Eva de Hullu, Vyv Huddy and Tom Scholte. Elsevier, 2023. […]

William T. Powers

Warren Mansell

Warren Mansell First published: 17 March 2011 https://doi.org/10.1111/j.1756-8765.2011.01140.x https://onlinelibrary.wiley.com/doi/full/10.1111/j.1756-8765.2011.01140.x

Franz Mechsner, Dirk Kerzel, Günther Knoblich & Wolfgang Prinz Mechsner, F., Kerzel, D., Knoblich, G. et al. Perceptual basis of bimanual coordination. Nature 414, 69–73 (2001). https://doi.org/10.1038/35102060 https://www.nature.com/articles/35102060