Karl Ewald
Hasse

Universität Göttingen


Johannes Peter
Müller

Universität Berlin


Hermann
von Helmholtz

Physikalisch-Technische Reichsanstalt


Wilhelm
Wundt

University of Leipzig




Henry
Kaiser

UC Berkeley


Benno
Erdmann

Universität Berlin






Lloyd
Humphreys

University of Illinois


Karl Ewald
Hasse

Universität Göttingen


Johannes Peter
Müller

Universität Berlin


Hermann
von Helmholtz

Physikalisch-Technische Reichsanstalt


Wilhelm
Wundt

University of Leipzig






Georg Elias
Müller

Universität Göttingen


George Elias
Muller

Göttingen, Breslau, Berlin (Gerontology Family Tree)


William
McDougall

UCL/Harvard


Cyril
Burt

University of London


Raymond B.
Cattell

University of Illinois
?


Thomas Alva
Edison

Edison Laboratory, Menlo Park (Physics Tree)






John
Dewey

Chicago (PsychTree)




Hermann
Ebbinghaus

Universität Berlin


Benno
Erdmann

Universität Berlin






Ledyard
Tucker

University of Illinois

John L.
Horn

USC
(Options)

James C.
Kaufman

California State University at San Bernardino



Craig
Marker

Mercer University

Lazar
Stankov

University of Sydney

J. P.
Gerber

Gordon College

Richard
Roberts

Educational Testing Services



Douglas A.
Hershey

Oklahoma State University

Joy M.
Jacobs-Lawson

University of Kentucky

Judith
Swiger

George Mason

Joann M.
Wilson

George Mason

Alica H.
Farrell

George Mason

Kirsten
Neukam

Oklahoma State University

Helen
Kiso

Susquehanna University

Janet
Koposko

Oklahoma State University

Ritu
Gupta

Oklahoma State University

Scott Michael
Hofer

University of Victoria

John HornX