Charles
Spearman

UCL (Neurotree)


Cyril
Burt

University of London (Neurotree)


Raymond B.
Cattell

UIUC (Neurotree)


John
Nesselroade

UVA (Neurotree)


Jean
Piaget

University of Geneva (Neurotree)


Bärbel
Inhelder

University of Geneva (Neurotree)


Ernst
Boesch

Saarland University (Neurotree)


Paul
Baltes

Max Planck Institute for Human Development (Berlin) (Neurotree)


Roger
Dixon

University of Alberta (Neurotree)

Odette N.
Gould

Mount Allison University
(Options)

Odette GouldX