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In observance of the 2024 holiday season, Sage offices will be closed Monday December 23rd through Wednesday January 1st. Normal operations, including shipping for orders placed during the closure, will resume on Thursday January 2nd. For technical support during this time, please visit our technical support page for assistance options. 

We wish you a wonderful holiday season. Thank you. 

Bruce W. Tuckman

Bruce W. Tuckman, Ph.D. (1938-2016), was Professor of Educational Psychology in the College of Education & Human Ecology at The Ohio State University and Founding Director of the Walter E. Dennis Learning Center, where providing students with training in learning and motivation strategies has been shown to increase their GPAs, retention and graduation rate. He earned his B.S. in Psychology from RPI and his M.A. and Ph.D. in Psychology from Princeton University. He was awarded Emeritus status at Ohio State in 2012.  Prior to his tenure at Ohio State, Dr. Tuckman held faculty and administrative roles at Rutgers University (1965-78), Baruch College of the City University of New York (1978-83), and Florida State University (1983-98). He authored 18 books and more than 100 articles about motivation, cognition, instructional design, and measurement.  In the 1960s, he developed Tuckman’s Stages of Group Development that continues to be taught and used worldwide ("forming, storming, norming, and performing"). He served for six years as Executive Editor of the Journal of Experimental Education. Based on his contributions to educational research, he was named a Fellow of both the American Psychological Association and the American Educational Research Association.