The Effects of Phonotactic Probability and Neighborhood Density on Adults' Word Learning in Noisy Conditions.
The Effects of Phonotactic Probability and Neighborhood Density on Adults' Word Learning in Noisy Conditions.
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语音概率和邻域密度对成人在噪音条件下学习单词的影响。
DOI：
10.1044/2016_ajslp-14-0165
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发表时间：
2016
影响因子：
2.6
通讯作者：
Cox,Casey
中科院分区：
文献类型：
--
作者：
Han,MinKyung;Storkel,HollyL;Lee,Jaehoon;Cox,Casey
PurposeNoisy conditions make auditory processing difficult. This study explores whether noisy conditions influence the effects of phonotactic probability (the likelihood of occurrence of a sound sequence) and neighborhood density (phonological similarity among words) on adults' word learning.MethodFifty-eight adults learned nonwords varying in phonotactic probability and neighborhood density in either an unfavorable (0-dB signal-to-noise ratio [SNR]) or a favorable (+8-dB SNR) listening condition. Word learning was assessed using a picture naming task by scoring the proportion of phonemes named correctly.ResultsThe unfavorable 0-dB SNR condition showed a significant interaction between phonotactic probability and neighborhood density in the absence of main effects. In particular, adults learned more words when phonotactic probability and neighborhood density were both low or both high. The +8-dB SNR condition did not show this interaction. These results are inconsistent with those from a prior adult word learning study conducted under quiet listening conditions that showed main effects of word characteristics.ConclusionsAs the listening condition worsens, adult word learning benefits from a convergence of phonotactic probability and neighborhood density. Clinical implications are discussed for potential populations who experience difficulty with auditory perception or processing, making them more vulnerable to noise.
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DOI：
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