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KMID : 1022420210130030021
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Phonetics and Speech Sciences
2021 Volume.13 No. 3 p.21 ~ p.29
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Relationship between executive function and cue weighting in Korean stop perception across different dialects and ages
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Kong Eun-Jong
Lee Hyun-Jung
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Abstract
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The present study investigated how one’s cognitive resources are related to speech perception by examining Korean speakers’ executive function (EF) capacity and its association with voice onset time (VOT) and f0 sensitivity in identifying Korean stop laryngeal categories (/t’/ vs. /t/ vs. /th /). Previously, Kong et al. (under revision) reported that Korean listeners (N = 154) in Seoul and Changwon (Gyeongsang) showed differential group patterns in dialect-specific cue weightings across educational institutions (college, high school, and elementary school). We follow up this study by further relating their EF control (working memory, mental flexibility, and inhibition) to their speech perception patterns to examine whether better cognitive ability would control attention to multiple acoustic dimensions. Partial correlation analyses revealed that better EFs in Korean listeners were associated with greater sensitivity to available acoustic details and with greater suppression of irrelevant acoustic information across subgroups, although only a small set of EF components turned out to be relevant. Unlike Seoul participants, Gyeongsang listeners’ f0 use was not correlated with any EF task scores, reflecting dialect-specific cue primacy using f0 as a secondary cue. The findings confirm the link between speech perception and general cognitive ability, providing experimental evidence from Korean listeners.
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KEYWORD
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Korean stop perception, acoustic cue weighting, executive function capacity, voice onset time (VOT), funda- mental frequency
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