Josiah
Royce

Harvard


Hugo
Münsterberg

Universität Berlin (Neurotree)










Charles Sanders
Peirce

Johns Hopkins


Herbert Baxter
Adams

Johns Hopkins (History of History Tree)


Granville Stanley
Hall

Johns Hopkins (Neurotree)


John
Dewey

Columbia


Ernest
Nagel

Columbia


Henry E.
Kyburg

Rochester

William L.
Harper

The University of Western Ontario (Canada)
(Options)

William HarperX