We extend an evolutionary perspective of development to the lifespan, proposing that human longevity may be related to the experience, knowledge, and wisdom provided by older members of human groups. In addition to the assistance in childcare provided by grandmothers to their daughters, the experience of wise elders could have served to benefit…

Adolescent risk-taking can be illuminated through an understanding of the development of the brain, of dual-processing theories, and of social norms and meanings. When adolescents take unjustified risks, it is often because of the weakness of their analytic systems, which provide an inadequate check on impulsive or ill-considered decisions. Social…

This commentary explains how the field of developmental cognitive neuroscience (DCN) holds the promise of a much wider interdisciplinary integration across sciences concerned with development: psychology, molecular genetics, neurobiology, and evolutionary developmental biology. First we present a brief history of DCN, including the key theoretical…

Brain development is self-organizing in that the unique structure of each brain evolves in unpredictable ways through recursive modifications of synaptic networks. In this article, I review mechanisms of neural change in real time and over development, and I argue that change at each of these time scales embodies principles of self-organizing…

The authors review competing theories concerning the emergence and early development of autobiographical memory. It is argued that the differences between these accounts, although important, may be more apparent than real. The crux of these disagreements lies not in "what" processes are important, but rather, the role these different processes…

Offers psychologist Baldwin's theory as an approach to the development of social understanding emphasizing gradual differentiation of self and other and rooting this process in embodied activity within a social context. Argues that Baldwin's account provides a stronger starting point for conceptualizing the infant's discovery of other, self, and…

Pursues William Kessen's analysis of psychologist Baldwin's 1905 paper by examining Baldwin's two proposed solutions to the mind-body problem: the materialist solution and the idealist solution. Demonstrates that Baldwin's ideas presaged those of developmental theorists and philosophers. Discusses Baldwin's proposal that current scientific ideas…

Searches for an understanding of developmental scholar William Kessen, and of what he was trying to teach in his later years. Discusses possible sources of Kessen's dissatisfaction with the field of child development, and whether any of these issues can be resolved in ways that Kessen might not have fully anticipated. Summarizes the main lessons…

Compares concepts defining Kohlbergian stages of moral development with those associated with orders of hierarchical complexity determined with a generalized content-independent stage-scoring system. Finds that Kohlberg's sequence generally matches that identified with the scoring system and that contract and authority concepts match the concepts…

Considers how students' mathematical thinking evolves as a result of their actions and everyday experiences and from increasing reliance on introduced mathematical principles and representations. Exemplifies how 8- to 10-year-olds' personal representations come to face with representations involving algebraic concepts. Explores implications for…

Maintains that the research teams producing the four articles in this special issue are working within the ecology of real schools to design and evaluate theory-guided research that has benefited from ample teacher input. Asserts that these articles exemplify the kind of research that schools require if the state of instruction and learning is to…

Asserts that developmental psychology's assumption that representation has nature of encoding is false; offers alternative model of representation based on the pragmatics of action. Argues that "frame problems" originate in the inherent requirement that encoding representations carry explicit content. Maintains that these problems impact theories…

Suggests an account of transitivity and transitive inferential reasoning differing from classic Piagetian and current information processing accounts. Postulates a three-component psychological system, with components relying on perceptual, linguistic, and conceptual subprocesses and sensitivity to simple cues. Maintains that the framework is…

Extends dynamic model of cognitive growth proposed by van Geert in three directions: (1) added a term to consider exposure to material to be learned; (2) developed method to apply model to cross-sectional studies; and (3) developed procedure to scale cognitive abilities tests with items of varying difficulty. Tests model with 2- to 15-year-olds'…

Selectively reviews influences on young children's word learning. Analyzes difficulties with the "constraint" concept in examining word learning. Concludes that the effect of so-called constraints cannot be separated from a wide range of cognitive and contextual influences on children's inferences about novel word meanings. Offers suggestions for…