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ERIC Number: EJ1140840
Record Type: Journal
Publication Date: 2017-Apr
Pages: 13
Abstractor: As Provided
ISSN: ISSN-1092-4388
Delayed Early Vocabulary Development in Children at Family Risk of Dyslexia
van Viersen, Sietske; de Bree, Elise H.; Verdam, Mathilde; Krikhaar, Evelien; Maassen, Ben; van der Leij, Aryan; de Jong, Peter F.
Journal of Speech, Language, and Hearing Research, v60 n4 p937-949 Apr 2017
Purpose: This study aimed to gain more insight into the relation between vocabulary and reading acquisition by examining early growth trajectories in the vocabulary of children at family risk (FR) of dyslexia longitudinally. Method: The sample included 212 children from the Dutch Dyslexia Program with and without an FR. Parents reported on their children's receptive and expressive vocabulary size at ages 17, 23, 29, and 35 months using the Dutch MacArthur Communicative Development Inventories. Dyslexia status at the end of Grade 2 (8 years) rendered 3 groups: FR-dyslexic (n = 51), FR-nondyslexic (n = 92), and typically developing-nondyslexic (TD) children (n = 69). Results: Repeated measures analyses showed that FR-dyslexic children had lower receptive vocabulary scores from 23 months onward and lower expressive scores from 17 months onward than FR-nondyslexic children. Latent growth curve modeling showed lower initial growth rates in FR-dyslexic children, followed by partial recovery, indicating a delayed increase in receptive and expressive vocabulary. FR-nondyslexic and TD children did not differ. Conclusions: Early deficits in receptive and expressive vocabulary are associated with later reading. Early vocabulary growth of FR-dyslexic children is characterized by a delay but not deviance of growth. Vocabulary can be considered an additional risk factor for dyslexia.
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Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Netherlands
Identifiers - Assessments and Surveys: MacArthur Communicative Development Inventory
Grant or Contract Numbers: N/A