?


Liane
Kaufmann

Innsbruck


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

Stephan Erich
Vogel

Western Ontario
(Options)

Stephan VogelX