Explores implications of two cognitive development perspectives for characterizing ontogeny of causal reasoning. Reviews literature on causal reasoning in the preschool years and concludes that the hypothesis of an invariant causal scheme is only partially correct. (Author/SO)

A conceptualization of intentional behavior is presented stressing the problem of diagnosis. Methodological requirements for the study of intentional memory development are used in a selective review of the literature. (MS)

Investigates the effect of various strategy-modeling techniques on the performance of both young children and elderly adults on the 20 Question Task. (Author/MP)

Examination of the way in which children conceive the development of animals shows that there are parallels among concepts of development with those of the periods of concrete operations and formal operations. The conception of development seems to advance further in the subsequent period of dialectical thought. (MS)

Proposes analogy as the central mechanism of knowledge acquisition in formal domains. Discusses experimental data on preschoolers' knowledge of one-to-one correspondence and college students' understanding of force decomposition. Suggests that a knowledge base domain is a thematically organized knowledge structure and that thematic relations in a…

Offers a theoretical and methodological approach to study of children's socio-cognitive interaction. Observation of object-centered activities among three age groups of children showed different modes of collaboration. Processes were similar across age groups; roots of basic peer interaction patterns reach back into infancy. Similarities across…

Comments on Verba's ideas about collaboration in peer interaction in this issue. Praises Verba for setting new direction in the study and understanding of social processes in cognitive development and for establishing important continuities in how children communicate with peers. Notes that Verba's analyses suggest natural categories of…