Using the blocked-translation paradigm with healthy participants, we examined Crutch and Warrington's hypothesis that concrete and abstract concepts are organized by distinct principles: concrete concepts by semantic similarities and abstract ones by associations. In three experiments we constructed two types of experimental blocking (similar…

Examined the strength of the association between language exposure estimates and vocabulary learning for simultaneous bilingual infants with differing patterns of exposure to the languages being learned. Findings revealed that the correlation was strong, even for children whose language environments changed by more than 20% between observations.…

Investigated whether the pseudoword repetition difference between poor and normal readers in the Netherlands could be explained by differences in memory for verbal materials or in familiarity with the composition of verbal materials. Concludes that the pseudoword repetition of poor readers is already operative in early, perceptual states of…

Investigation of associations between learning-disabled children's ability to repeat pseudowords and their performances on other measures of phonological processing and academic achievement found that repetition ability was more closely related to reading and spelling skills than to mathematics achievement, while measures of phonological skills…