George A.
Miller

Princeton




Hans
Wallach

New School for Social Research








George A.
Miller

Princeton


William
Hirst

New School for Social Research








Clark L.
Hull

UW Madison




Leon
Festinger

New School for Social Research






Gerald
Echterhoff

Jacobs University Bremen

René
Kopietz

Jacobs University Bremen
(Options)

René KopietzX