Abstract
ABSTRACTThe lexical restructuring model (LRM; Metsala & Walley, 1998) can be used to explain the development of phonological awareness (PA). According to LRM, as children's vocabularies increase, children develop a more refined lexical representation of the sounds comprising those words, and in turn children become more sensitive to the detection of specific phonemes. LRM identifies several lexical characteristics of words that influence lexical restructuring: age of acquisition (AoA), word frequency, neighborhood density, and phonotactic probability. In this study, the effects of these lexical characteristics on children's performance on PA tasks were evaluated, as well as moderation of these effects by children's oral language skills and ages, in two independent samples of preschool children who completed measures of PA and oral language. For both samples, AoA and word frequency were negatively related to PA skills, and phonotactic probability was positively related to PA skills. Children's ages and oral language skills were positive predictors of PA skills, and children's ages moderated the relations between AoA and PA skills for children in Sample 2. Children's oral language skills moderated the relations between AoA and PA skills for children in Sample 1. Implications are discussed.
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