Alfred
Binet

Sorbonne




Édouard
Claparède

Rousseau Institute


Jean
Piaget

University of Geneva


Jean
Piaget

University of Geneva


Bärbel
Inhelder

University of Geneva


Annette
Karmiloff-Smith

Birkbeck College








Graham
Hitch

University of York




Daniel
Ansari

Western Ontario

Gavin Rhys
Price

Vanderbilt University, Peabody College
(Options)

Gavin PriceX