Dataset Information

Evidence for [Coronal] Underspecification in Typical and Atypical Phonological Development.

ABSTRACT: The Featurally Underspecified Lexicon (FUL) theory predicts that [coronal] is the language universal default place of articulation for phonemes. This assumption has been consistently supported with adult behavioral and event-related potential (ERP) data; however, this underspecification claim has not been tested in developmental populations. The purpose of this study was to determine whether children demonstrate [coronal] underspecification patterns similar to those of adults. Two English consonants differing in place of articulation, [labial] /b/ and [coronal] /d/, were presented to 24 children (ages 4-6 years) characterized by either a typically developing phonological system (TD) or a phonological disorder (PD). Two syllables, /b?/ and /d?/, were presented in an ERP oddball paradigm where both syllables served as the standard and deviant stimulus in opposite stimulus sets. Underspecification was examined with three analyses: traditional mean amplitude measurements, cluster-based permutation tests, and single-trial general linear model (GLM) analyses of single-subject data. Contrary to previous adult findings, children with PD demonstrated a large positive mismatch response (PMR) to /b?/ while the children with TD exhibited a negative mismatch response (MMN); significant group differences were not observed in the /d?/ responses. Moreover, the /b?/ deviant ERP response was significantly larger in the TD children than in the children with PD. At the single-subject level, more children demonstrated mismatch responses to /d?/ than to /b?/, though some children had a /b?/ mismatch response and no /d?/ mismatch response. While both groups of children demonstrated similar responses to the underspecified /d?/, their neural responses to the more specified /b?/ varied. These findings are interpreted within a proposed developmental model of phonological underspecification, wherein children with PD are functioning at a developmentally less mature stage of phonological acquisition than their same-aged TD peers. Thus, phonological underspecification is a phenomenon that likely develops over time with experience and exposure to language.

SUBMITTER: Cummings AE

PROVIDER: S-EPMC7782969 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Evidence for [Coronal] Underspecification in Typical and Atypical Phonological Development.

Cummings Alycia E AE Ogiela Diane A DA Wu Ying C YC

Frontiers in human neuroscience 20201222

The Featurally Underspecified Lexicon (FUL) theory predicts that [coronal] is the language universal default place of articulation for phonemes. This assumption has been consistently supported with adult behavioral and event-related potential (ERP) data; however, this underspecification claim has not been tested in developmental populations. The purpose of this study was to determine whether children demonstrate [coronal] underspecification patterns similar to those of adults. Two English conson ...[more]

PMID: 33414710

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Dataset Information

Evidence for [Coronal] Underspecification in Typical and Atypical Phonological Development.

Publications

Evidence for [Coronal] Underspecification in Typical and Atypical Phonological Development.

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