Replies to commentary regarding authors' earlier article proposing a modified constructivist account of origins of mental representation. Elaborates on Smith's discussion contrasting empiricist and constructivist approaches. Discusses Smith's restatement of Piaget's position in terms of levels of representational capacities and replies to specific…

Discusses objective knowledge and reality; objective experience and objectivity; objectivity without representation; and problems with constructivism. Argues that at issue with Muller, Sokol, and Overton's model is dispensability of the representation concept in an account of knowledge development during infancy. Concludes that a constructivist…

Suggests a model for the development of mental representation. Explores empiricist and constructivist models and maintains that the constructivist model provides a better ground for theory building. Evaluates Piaget's constructivist account of the emergence of mental representation. Proposes that his account is insufficient and suggests a…

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…