The author reflects on Piaget's 1972 article, "Intellectual evolution from adolescence to adulthood," addressed to questions regarding what he alleged to be the final, most advanced level of cognition in his developmental stage theory--formal operations, as described in his 1958 volume coauthored with Inhelder, "The growth of logical thinking from…

Museum educators often think about what they want children to take away with them from museum visits. But at least as important is what children bring to these visits. Research in developmental psychology shows that children and adolescents progress through a sequence of ways of understanding knowledge and knowing--understanding that lies at the…

Responds that questions of study by Kuhn and others (PS 524 345) in this issue were motivated by concerns about the role of scientific thinking in general thinking, not in development of scientific reasoning. Study was meant to increase understanding of role of strategies in development, not provide definitive explanation of how strategies fit…

Studied the establishment of the reliability of an instrument for assessing developmental stages and the relation between reliability and sequentiality of the stages. (GO)

Looked for evidence of an intermediate stage between the second and third stages in multiple seriation during which subjects seriate the material on one dimension and classify it on the other. Fine grained analysis of stages is considered useful in elucidating the mechanisms of progression through a stage sequence. (GO)

Used a microgenetic method to examine knowledge acquisition as a process by coordinating existing theories with new evidence. Subjects were 17 community college students (ages 22-47) and 15 fourth graders. Assessed knowledge acquisition in problem solving in both physical and social domains. Found multiple strategies for, and varying levels of,…

Studied the relationship between mental age and progression toward Piaget's stages of concrete operations and formal operations in a sample of middle class children. Formal operations in preadolescence and adulthood are discussed in relation to IQ. (GO)

Asserts the importance of developing in students an intrinsic valuing of intellectual activities as the firmest basis for sustaining intellectual motivation. Discusses how to develop in students an understanding of what it means to learn and to know, including a movement up the levels of epistemological understanding from realist to evaluativist.…