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Research Director, Institut Jean-Jacques Rousseau, Geneva
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Professor of Psychology, Sociology and the Philosophy of Science, University of Neuchatel
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Professor of the History of Scientific Thought, University of Geneva
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Director, International Bureau of Education, Geneva
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Director, Institute of Educational Sciences, University of Geneva
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Professor of Experimental Psychology and Sociology, University of Lausanne
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Professor of Sociology, University of Geneva
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Professor of Experimental Psychology, University of Geneva
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Professor of Genetic Psychology, Sorbonne, Paris
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Director, International Centre for Genetic Epistemology, Geneva
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Emeritus Professor, University of Geneva