Researchers disagree not only about the existence or magnitude of sex-related differences in spatial perception, but also about the determinants of such differences. Training in three distinct spatial tasks was provided in an attempt to destablize individual and sex-related differences, while exploring the relative contributions of biological and…

Computational models of infant categorization often fail to elaborate the transitional mechanisms that allow infants to achieve adult performance. In this article, we apply a successful connectionist model of adult category learning to developmental data. The Supervised and Unsupervised Stratified Adaptive Incremental Network (SUSTAIN) model is…