Differences at 17 Months: Productive Language Patterns in Infants at Familial Risk for Dyslexia and Typically Developing Infants

Koster, Charlotte; Been, Pieter H.; Krikhaar, Evelien M.; Zwarts, Frans; Diepstra, Heidi D.; Van Leeuwen, Theo H.
April 2005
Journal of Speech, Language & Hearing Research;Apr2005, Vol. 48 Issue 2, p426
Academic Journal
Productive vocabulary composition is investigated in 17-month-old children who are participating in an ongoing longitudinal dyslexia research project in the Netherlands. The project is searching for early precursors for dyslexia and follows a group of children who are genetically at risk for dyslexia and a control group during the first 10 years of their lives. Among other measures, the Dutch version of the MacArthur Communicative Development Inventory: Words and Sentences (N-CDI) is used to investigate early vocabulary development. In this article, the first N-CDI results from the 2 groups of 17-month-old children are compared with each other, with other cross-sectional, cross-linguistic studies, and with a similar Finnish longitudinal dyslexia project. The Dutch children show the same general acquisition pattern as documented for other languages, but there are significant differences between the two groups of 17-month-old children in total number of words produced and in the linguistic composition of their productive vocabulary.


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