Foremost is the work of Jean Piaget, the Swiss psychologist who pioneered the field and whose theories have had an unparalleled impact on education, especially in Europe.
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- 皮亚杰,这位瑞士心理学家,是这一领域的开拓者;在教育领域,特别是在欧洲的教育领域,他的理论所产生的影响无人能比。