Kenneth W.
Spence

Iowa University


Carl
Stumpf

Universität Berlin


Wolfgang
Köhler

Dartmouth (Neurotree)


Max
Wertheimer

New School for Social Research (Neurotree)




Leon
Festinger

New School for Social Research


Judson Ridgway
Mills

University of Missouri, Columbia


Benno
Erdmann

Universität Berlin (Neurotree)


Max
Planck

Universität Berlin (Physics Tree)


Walther
Nernst

Universität Berlin (Chemistry Tree)


Carl
Stumpf

Universität Berlin


Wolfgang
Köhler

Dartmouth (Neurotree)








Carl
Stumpf

Universität Berlin


Wolfgang
Köhler

Dartmouth (Neurotree)


Max
Wertheimer

New School for Social Research (Neurotree)




Dorwin
Cartwright

University of Michigan










Kenneth W.
Spence

Iowa University


Carl
Stumpf

Universität Berlin


Wolfgang
Köhler

Dartmouth (Neurotree)


Max
Wertheimer

New School for Social Research (Neurotree)




Leon
Festinger

New School for Social Research



John H.
Harvey

University of Iowa
(Options)

Brian G.
Pauwels

University of Iowa

John HarveyX