This study addressed three related aims: (a) to replicate and extend previous work regarding the nonunitary nature of processing speed, response inhibition, and working memory during development; (b) to quantify the rate at which processing speed, response inhibition, and working memory develop and the extent to which the development of these…

Transcoding Arabic numbers from and into verbal number words is one of the most basic number processing tasks commonly used to index the verbal representation of numbers. The inversion property, which is an important feature of some number word systems (e.g., German "einundzwanzig" [one and twenty]), might represent a major difficulty in…

This study examined the correlates of new word learning in a sample of 64 typically developing children between 5 and 8 years of age and a group of 22 teenagers and young adults with Down syndrome. Verbal short-term memory and phonological awareness skills were assessed to determine whether learning new words involved accurately representing…

Three experiments investigated the roles of resource-sharing and intrinsic memory demands in complex working memory span performance in 7- and 9-year-olds. In Experiment 1, the processing complexity of arithmetic operations was varied under conditions in which processing times were equivalent. Memory span did not differ as a function of processing…

Maintains that Judith Bowey's data and theoretical evaluation undermine her conclusion that phonological short-term memory does not mediate long-term phonological learning. Her assessment of nonword repetition may have reduced the measure's reliability, leading to a low association with vocabulary and unexpectedly high performance. Her assumptions…

Five experiments examined the extent and nature of the referential source errors of 5- to 10-year-old children who listened to stories containing a referential utterance. The results supported five conclusions about children's confusion of different sources of information in referential communication. (SW)

Illustrated vignettes, some containing an ambiguous reference to the illustration, were presented to kindergartners and second and fourth graders. Variations in presentation tested the effects of question sequence, of delay between ambiguous reference and interrogation, and of the complication of the illustration on children's ability to detect…

Assessed third-graders' phonological sensitivity, working memory, syntactic processing, word recognition, pseudoword reading, and reading comprehension. Found that phonological sensitivity was a strong predictor of reading performance after working memory and syntactic processing had been partialled out. Syntactic processing failed to predict word…

Contrasts the hypothesis that phonological memory, but not phonological sensitivity, accounts for significant variation in young children's receptive vocabulary. Presents the view that both phonological memory and sensitivity are manifestations of a latent phonological processing ability. Suggests that with age and performance IQ effects…