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Learning Phonemic Vowel Length from Naturalistic Recordings of Japanese Infant-Directed Speech
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Fast mapping, slow learning: Disambiguation of novel word-object mappings in relation to vocabulary learning at 18, 24, and 30 months
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Abstract:
When hearing a novel name, children tend to select a novel object rather than a familiar one, a bias known as disambiguation. Using online processing measures with 18-, 24, and 30-month-olds, we investigate how the development of this bias relates to word learning. Children’s proportion of looking time to a novel object after hearing a novel name related to their success in retention of the novel word, and also to their vocabulary size. However, skill in disambiguation and retention of novel words developed gradually: 18-month-olds did not show a reliable preference for the novel object after labeling; 24-month-olds reliably looked at a novel object on disambiguation trials but showed no evidence of retention; and 30-month-olds succeeded on disambiguation trials and showed only fragile evidence of retention. We conclude that the ability to find the referent of a novel word in ambiguous contexts is a skill that improves from 18 to 30 months of age. Word learning is characterized as an incremental process that is related to -but not dependent on -the emergence of disambiguation biases.
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URL: https://doi.org/10.1016/j.cognition.2012.08.008
http://www.ncbi.nlm.nih.gov/pubmed/23063233
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6590692/
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A cross-dialect acoustic description of vowels : Brazilian and European Portuguese
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Dialectal effects in the perception of vowels produced by first and second language speakers : North Carolinian versus Southern Welsh listeners
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