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<div class="boxBd boxLtr">• jean piaget (1896-1980), swiss psychologist and researcher on child development (best known for his theory about the four stages of cognitive development in children)</div>

• jean piaget (1896-1980), swiss psychologist and researcher on child development (best known for his theory about the four stages of cognitive development in children)

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پیشنهاد کاربران

<p>ژان پیاژه (روان شناس سوئیسی)</p>