To examine Fodor's (1992) argument that standard false belief tasks used in developmental research seriously underestimate young children's understanding of false belief, three- and four-year-old children were given three tasks of action prediction and explanation, belief preduction, and knowledge prediction and explanation. The overall pattern of…

Suggests that, with the waning influence of Piaget and shortcomings of information-processing perspectives of cognitive growth, cognitive developmentalists lack a metatheory to guide their research. Posits developmental biology as metatheory for cognitive development. Introduces basic principles of evolutionary psychology, and examples of…

Interviews with adolescents revealed that they have a complex "divided metaphysics" of subjectivity, based on a dualistic view of reality versus appearance. Certain conceptual methodological issues surrounding research into self identity are discussed. (Author/DB)

Proposes an interference explanation of data from dual-task studies of memory development. Dual-task data support the resources hypothesis that memory processes tax a common pool of cognitive energy, which has been variously called attentional, mental effort, and working-memory capacities. Suggests that dual-task deficits are instances of output…

Examined matching-to-sample procedures that might result in emergence in preschool children of conditional behavior that was never explicitly taught. Children were asked to match a novel and a familiar picture to a spoken word which was English or nonsense. (SKC)

Two experiments involving students from grades 1-2 and 5-6 found strong connections between development and forgetting rates when the influences of learning ability were eliminated. Findings eliminated a hypothesis based on age variability in overlearning. (RH)

The outcomes of collaboration provide an incomplete and potentially misleading picture of cognitive change, one that is clarified by examining the collaborative processes themselves. Results from a study illustrate the dangers of focusing solely on the consequences of collaboration and emphasize why the analysis of collaborative processes is…

Tests the hypothesis that the presence of attentional deficits in autistic children interferes with their performance on tests of intellectual development and status. Twelve autistic, 12 normal, and 12 trainable mentally retarded children ages four through nine were administered six "Piagetian" tasks assessing performance at…

To assess young children's understanding of false belief, investigators often show them a familiar container, then demonstrate that it holds an object different from the one the children expected. The children are then asked what they originally thought the container held, and what another container will hold. Three-year-old children typically…

The problems with using Piagetian theory to explore language-thought relationships are two-fold. First there are methodological problems, including the lack of experimental controls and the lack of uniform criteria by which cognitive operations are identified. A second difficulty is the questionable practice of interpreting child language…

The hypothesis that differences in definitions of perceived internality in Piagetian and locus of control viewpoints account for paradoxical findings was tested empirically using two independent samples of children. Results suggest that perceived internality depends on the aspects of means-ends beliefs on which one focuses.

Age and cognitive developmental level were used as independent variables in order to assess their relative effects on the number and kinds of self-referent constructs used by children and adolescents. Fifty-four 8-year-olds, sixty-four 12-year-olds, and forty-six 16-year-olds were recruited from their respective third, seventh, and eleventh grades…

This response to Brainerd and Reyna's paper (in this issue) argues that the common resources hypothesis can be applied to a wider range of phenomena than can the output-interference hypothesis. Presents results of a dual-task experiment under bidirectional deficits. Concludes that dual-task studies do not provide critical tests of the resources…

The concept of "structure" is discussed in connection with the biological and psychological sciences and shown, through a short historical analysis, to have been subject to imprecise use. The recent "structuralist movement" in the social sciences has also tended to cloud the meaning of structure rather than to clarify it. Using…

The incidental learning paradigm supports two findings concerning selective attention: (1) the difference between central and incidental task performance increases with age, and (2) the correlation between central and incidental performance decreases with age. Neither of these findings clearly supports the view that attentional selectivity…