The growth of lexical constraints on spoken word recognition

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Abstract
In this study, we examined the influence of various sources of constraint on spoken word recognition in a mispronunciation-detection task. Five- and 8-year-olds and adults were presented with words (intact or with word-initial or noninitial errors) from three different age-of-acquisition categories. “Intact” and “mispronounced” responses were collected for isolated words with or without a picture referent (Experiment 1) and for words in constraining or unconstraining sentences (Experiment2). Some evidence for differential attention to word-initial as opposed to non-initial acoustic-phonetic information (and thus the influence of sequential lexical constraints on recognition) was apparent in young children’s and adults’ response criteria and in older children’s and adults’ reaction times. A more marked finding, however, was the variation in subjects’ performance, according to several measures, with age and lexical familiarity (defined according to adults’ subjective age-of-acquisition estimates). Children’s strategies for responding to familiar and unfamiliar words in different contexts are discussed.

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