A total of 60 kindergarten and first- and second-grade girls were presented with three tasks: concept-shift, sort, and hierarchization. Without exception, children who failed a task also failed the higher-order task(s), and children who passed a task also passed the lower-order task(s). Implications in relation to Piaget's theory of development of…

This is the first study to investigate experimentally how children come to learn mappings between novel phrasal forms and novel meanings: a central task in learning a language. Two experiments are reported. In both studies 5- to 7-year-old children watched a short set of video clips depicting objects appearing in various ways. Each scene was…