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Clark L.
Hull

UW Madison


Kenneth W.
Spence

Iowa University


Carl
Stumpf

Universität Berlin


Max
Wertheimer

New School for Social Research (Neurotree)




Leon
Festinger

New School for Social Research


Jack W.
Brehm

University of Kansas

Paul J.
Silvia

University of Kansas
(Options)

Paul SilviaX