Developmental psychologists have a long history of using triangle metaphors to conceptualise the social constitution of psychological development. In this paper, we present a genealogy of triadic theories, to clarify their origins, distinctions between them, and to identify key themes for theoretical development. The analysis identifies three core…

Analyzes the intentionality of conceptually mediated perception and explicates a conception of immediate perception and its intentionality. The model of immediate perception is applied to studies of infant perceptual capacities in the first months of life. Prefigurations of the categories of object, identity, existence, permanence, and…

Thirty 7-year-old and 26 10-year-old boys were presented with temporal sequences of meaningful and meaningless figures to determine the differences in perception and retention of above- and below-average readers. (Author/AJ)

Reviews research on verbal labeling and shortTerm memory. (Author/WY)

This review argues that an hypothesis about longitudinal development may be derived from, and tested exclusively by, cross-sectional data, when the potential sources of interpretive errors are dealt with adequately. The argument is illustrated by cross-sectional data relevant to developmental mediation theory. (Author/SS)

Maintains that, although Leontiev's sociocultural orientation and its activity emphasis were inherited from Vygotsky's theory, the two men's theoretical motives and goals differed. Vygotsky's focus on symbolic mediation transforming psychological processes and Leontiev's on activities leading to internalization of action in mental processes were…

Contrasts work of Leontiev and Vygotsky. Suggests that Leontiev concentrated on social activity as a whole, whereas Vygotsky made semiotic mediation through culturally developed symbols a central aspect of his analysis. Maintains that they shared a philosophical base and that Leontiev used Vygotsky's ideas as a starting point to explore human…

Proposes a self-instructional strategy training paradigm designed to explicitly teach that the use of heuristic processes and mediational devices can be employed to compensate for age-associated deficits, such as poor problem solving. Format for the procedure was derived from the developmental research of the Soviet psychologists Vygotsky and…