“Quantitative Analysis of Purposive Systems: Some Spadework at the Foundations of Scientific Psychology“
William T. Powers
Psychological Review, 1978, Vol. 85, No. 5, 417-435
Books
Ways of Learning and Knowing: The Epistemology of Education
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 […]
Bill Powers
Discussion between Steven Hayes and Bill Powers (2011)
Hello, all — Attached is a nice article by Fred Nichols (http://www.nickols.us/ManageYOP.pdf) who is a management consultant and a long-time CSG (control system group) member. It has a bearing on the difference between ACT (Steve […]
Events
IAPCT conference 2026
36th IAPCT Conference – York, UK | October 7-10, 2026 + MOL practitioners meeting, October 12+13, near Manchester Welcome to the 36th IAPCT Conference and Annual Meeting, held near the historic city of York, UK, […]