A control systems conceptualization of the goal-setting and changing process

36th IAPCT Conference – York, UK | October 7-10, 2026 + MOL practitioners meeting, October 12+13, near Manchester (tbc). We’re excited to announce that the 36th IAPCT Conference and Annual Meeting will take place near […]

Hugh G. Petrie “I think that this book will be ‘compulsory reading’ in graduate schools of education around the country, and that it will arouse a vigorous and healthy controversy by shaking people out of […]

Hugh G. Petrie “For most of his career, Hugh was way ahead of his time. His papers in this volume still are. The role of the evolutionary process of blind variation and selective retention in […]