Argues that causal understanding is a developmental primitive: children develop core concepts of causality at a very early age, causality plays a necessary role in subsequent development across many domains, and basic causal processes can be activated automatically or implicitly. (HTH)

The present paper reviews children's tendency to engage in essentialist reasoning about aggression. First, children's tendency to conceive of aggression as both stable over time and due to intrinsic factors is examined. Then, contextual and social factors that may promote essentialist reasoning about aggression are explored, followed by a…

Responds to Mandler's critique of authors' view of infant categorization. Maintains that their view of infant categorization is not characterized by a shift from one type of category to another but by gradual changes in the kinds of information infants can use in forming categories. Clarifies position regarding a single categorical process using…

Demonstrates the need for a process-oriented, constructivist approach to understanding infants' categorization abilities. Suggests that emphasizing the distinction between perceptual and conceptual categorization has been an obstacle to forging an approach. Proposes a more microanalytic consideration of features available to infants at different…

Reviews literature in social psychology addressing belief change. Concludes there is no reason to renounce the widely held view that cognitive engagement (contemplation) has largely positive consequences. Argues that research on conceptual change will benefit from examining a broader range of instances of commonplace belief change, and that…

Presents a framework within which to organize and synthesize existing knowledge about children's understanding of the mental states of imagination, pretense, and dreams. Concludes that by the age of three, children understand important fundamental aspects of the mental nature, origin, and truth-relation of fictional mental states, but that their…

Discusses hierarchical complexity of tasks as a way of conceptualizing information in terms of the power required to complete a task, and its implications for developmental psychology and information science. Provides an analytic solution to the definition of developmental stages and allows for the possibility within the science of scaling the…