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Journal Article

Lexical exposure and word-from encoding in 1.5-year-olds


Swingley,  Daniel
Language Comprehension Group, MPI for Psycholinguistics, Max Planck Society;
Phonological Learning for Speech Perception, MPI for Psycholinguistics, Max Planck Society;

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Swingley, D. (2007). Lexical exposure and word-from encoding in 1.5-year-olds. Developmental Psychology, 43(2), 454-464. doi:10.1037/0012-1649.43.2.454.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-18EB-F
In this study, 1.5-year-olds were taught a novel word. Some children were familiarized with the word's phonological form before learning the word's meaning. Fidelity of phonological encoding was tested in a picture-fixation task using correctly pronounced and mispronounced stimuli. Only children with additional exposure in familiarization showed reduced recognition performance given slight mispronunciations relative to correct pronunciations; children with fewer exposures did not. Mathematical modeling of vocabulary exposure indicated that children may hear thousands of words frequently enough for accurate encoding. The results provide evidence compatible with partial failure of phonological encoding at 19 months of age, demonstrate that this limitation in learning does not always hinder word recognition, and show the value of infants' word-form encoding in early lexical development.