Two studies are presented investigating the feasibility of using the Language Development Survey (LDS), a vocabulary checklist completed by parents, for the epidemiological investigation of the prevalence of expressive language delay in 2-year-olds.
Two samples of upper-middle class toddlers were studied (Study 1: N = 108; Study 2: N = 92).
Mean vocabulary reported was 195 words in Study 1 and 184 words in Study 2, with 13% and 15% of the respective samples reported to have fewer than 50 words of vocabulary.
The correlation between reported LDS vocabulary and total number of Bayley objects and Stanford-Binet pictures named by the child was 0.78 in Study 1 and 0.82 in Study 2. In both studies, the LDS exhibited excellent sensitivity and specificity for the identification of language delay at 2 years old.
Mots-clés Pascal : Epidémiologie, Retard langage, Trouble développement, Développement verbal, Aptitude verbale, Vocabulaire, Test aptitude, Psychométrie, Age préscolaire, Enfant, Homme, Language Development Survey Rescorla
Mots-clés Pascal anglais : Epidemiology, Language retardation, Developmental disorder, Language development, Verbal ability, Vocabulary, Aptitude test, Psychometrics, Preschool age, Child, Human, Language Development Survey Rescorla
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 93-0383575
Code Inist : 002B18H01. Création : 199406.