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In page Marcia Linn:

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In 1967–68, Linn worked with Jean Piaget and other researchers at the Institute Jean Jacques Rousseau in Geneva, Switzerland. While in Geneva, Linn spent time in schools, interviewing students using the Piagetian clinical method. When she returned to California, Linn conducted many interviews in which she asked students to explore scientific problems, which formed the basis for her perspective on knowledge integration.[citation needed]