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Jean Piaget on Twitter: "With my wife, Valentine Châtenay and my three lovely children, Jacqueline, Lucienne and Laurent. https://t.co/Vklr6kpKUC" / Twitter
![Jean Piaget (August 9, 1896 — September 16, 1980), Swiss psychologist | World Biographical Encyclopedia Jean Piaget (August 9, 1896 — September 16, 1980), Swiss psychologist | World Biographical Encyclopedia](https://prabook.com/web/show-photo.jpg?id=2821511&cache=false)
Jean Piaget (August 9, 1896 — September 16, 1980), Swiss psychologist | World Biographical Encyclopedia
![Cognitive Development Jen Brace Jean Piaget “Father” of cognitive development Studied his children Jacqueline, Lucienne & Laurent Where does. - ppt download Cognitive Development Jen Brace Jean Piaget “Father” of cognitive development Studied his children Jacqueline, Lucienne & Laurent Where does. - ppt download](https://images.slideplayer.com/32/9848424/slides/slide_3.jpg)
Cognitive Development Jen Brace Jean Piaget “Father” of cognitive development Studied his children Jacqueline, Lucienne & Laurent Where does. - ppt download
![Cognitive Development Jen Brace Jean Piaget “Father” of cognitive development Studied his children Jacqueline, Lucienne & Laurent Where does. - ppt download Cognitive Development Jen Brace Jean Piaget “Father” of cognitive development Studied his children Jacqueline, Lucienne & Laurent Where does. - ppt download](https://slideplayer.com/9848424/32/images/slide_1.jpg)