Carl
Stumpf

Universität Berlin




Max
Wertheimer

New School for Social Research






Jacob Robert
Kantor

University of Maryland (PsychTree)


Lee Edward
Travis

University of Iowa


Wendell
Johnson

University of Iowa




Chauncy McKinley
Louttit

Indiana University Bloomington




Richard
Jessor

CU Boulder

Colleen M.
Ehrnstrom

CU Boulder
(Options)

Colleen EhrnstromX