Theorists by Surname
Norman Amundson
Tanya Arroba
Nancy Arthur
Albert Bandura
Tol Bedford
Nancy Betz
David L. Blustein
Isabel Briggs Meyers
Jim Bright
Duane Brown
Steven D. Brown
Raymond Cattell
J. M. Chartrand
Charles P. Chen
Raymond Christal
Larry Cochran
A. Collin
Katharine Cook Briggs
Sherry Cormier
R. Kelly Crace
René V. Dawis
Albert de Folter
Ans De Vos
Carlo DiClemente
John Driscoll
Gerard Egan
Alison J. Fielding
Dawn Freshwater
Graham Gibbs
Eli Ginzberg
Linda Gottfredson
Gail Hackett
Harold L. Hackney
Douglas T. Hall
Sunny Hansen
Frederick Herzberg
Phil Hodkinson
Kimberly A.S. Howard
Dennis T. Jaffe
Melanie Jasper
Minna Kattelus
David Kolb
John D. Krumboltz
Bill Law
Reinekke Lengelle
Robert W. Lent
A. S. Levin
Kurt Lewin
Ronald Lippitt
Lloyd H. Lofquist
Kris Magnusson
Abraham Maslow
Mary McMahon
Frans Meijers
Judi Miller
William R. Miller
Anna Miller – Tiedeman
Anita M. Mitchell
Kathleen E. Mitchell
L. K. Mitchell
Roberta A. Neault
Nigel Nicholson
Spencer Niles
Gabriele Oettingen
R. P O’Hara
Cecil Holden Patterson
Wendy Patton
R. Vance Peavy
G. W. Peterson
Deirdre A. Pickerell
James Prochaska
Robert Pryor
R. C. Reardon
Dave Redekopp
Hazel L. Reid
Danielle Rivern-Simard
Ken Roberts
Carl Rogers
Gary Rolfe
Stephen Rollnick
Denise M. Rousseau
James P. Sampson
Edgar H. Schein
Nancy Schlossberg
Donald A. Schön
Donald A. Schutt
Cynthia D. Scott
Andrew C. Sparkes
Donald Super
David Tiedeman
Ernest Tupes
Ladislav Valach
Marijke Verbruggen
Victor Vroom
Lev Vygotsky
Hyung Joon Yoon
R. A. Young