<Li> 1939--51 Professor of Sociology, University of Geneva </Li> <Li> 1940--71 Professeur ordinaire of Experimental Psychology, University of Geneva </Li> <Li> 1952--64 Professor of Genetic Psychology, Sorbonne, Paris </Li> <Li> 1954--57 President, International Union of Scientific Psychology </Li>

Who published an article based on the development of his child during their first year of life