Intonational development has been an area of interest during the past four decades, from the perspectives of both production and perception. But relatively few conclusions have been made about how children acquire the intonational component of their grammar. To date, prior studies of intonational development have not included a fine-grained…

Previous investigators have found significant relations between children's early spontaneous gesture and their subsequent vocabulary development: the more gesture children produce early, the larger their later vocabularies. The questions we address here are (1) whether we can increase children's gesturing through experimental manipulation and, if…