Individual variability in infant's language processing is partly explained by environmental factors, like the quantity of parental speech input, as well as by infant-specific factors, like speech production. Here, we explore how these factors affect infant word segmentation. We used an artificial language to ensure that only statistical…

Two studies of concept development and categorization among 1-, 2-, and 3-year-old children suggest that concept formation is a socially guided process involving convergence on an adult model. Convergence in labeling is an early strategy for shaping children's category boundaries, while later, more elaborate linguistic means are used to…