John B.
Watson

Johns Hopkins








Pio
del Rio-Hortega

Madrid University


Otfrid
Foerster

University of Breslau








Edmund Clark
Sanford

Clark University




Carl Emil
Seashore

University of Iowa








Harry F.
Harlow

UW Madison (Primatology Tree)


Alan E.
Fisher

University of Pittsburgh












Eliot
Stellar

Johns Hopkins




Alan K.
Johnson

University of Iowa

Douglas G.
Whyte

University of Iowa
(Options)

Douglas WhyteX