The Role of Talker Variability in Nonnative Phonetic Learning: A Systematic Review and Meta-Analysis.
Purpose: High-variability phonetic training (HVPT) has been found to be effective on adult second language (L2) learning, but results are mixed in regards to the benefit of multiple talkers over single talker. This study provides a systematic review with meta-analysis to investigate the talker varia...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 64; no. 12; pp. 4802 - 4826 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Dec2021
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=154172449&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 154172449 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Dec2021 vid: 64 iid: 12 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 154172449 10.1044/2021_JSLHR-21-00181 ppf: 4802 ppct: 24 formats: fmt: @attributes: type: P size: 1.9MB tig: atl: The Role of Talker Variability in Nonnative Phonetic Learning: A Systematic Review and Meta-Analysis. aug: au: Xiaojuan Zhang Bing Cheng Yang Zhang affil: English Department & Language and Cognitive Neuroscience Lab, School of Foreign Studies, Xi'an Jiaotong University, China Department of Speech-Language-Hearing Sciences and Center for Neurobehavioral Development, University of Minnesota, Twin Cities, Minneapolis su: Phonetics Second language acquisition Adults Speech perception Phonological awareness Meta-analysis Systematic reviews Health outcome assessment Quality assurance Descriptive statistics Research funding MEDLINE ERIC (Information retrieval system) sug: subj: Phonetics Second language acquisition Adults Speech perception Phonological awareness Meta-analysis Systematic reviews Health outcome assessment Quality assurance Descriptive statistics Research funding MEDLINE ERIC (Information retrieval system) ab: Purpose: High-variability phonetic training (HVPT) has been found to be effective on adult second language (L2) learning, but results are mixed in regards to the benefit of multiple talkers over single talker. This study provides a systematic review with meta-analysis to investigate the talker variability effect in nonnative phonetic learning and the factors moderating the effect. Method: We collected studies with keyword search in major academic databases including EBSCO, ERIC, MEDLINE, ProQuest Dissertations & Theses, Elsevier, Scopus, Wiley Online Library, and Web of Science. We identified potential participant-, training-, and study-related moderators and conducted a random-effects model meta-analysis for each individual variable. Results: On the basis of 18 studies with a total of 549 participants, we obtained a small-level summary effect size (Hedges' g = 0.46, 95% confidence interval [CI; 0.08, 0.84]) for the immediate training outcomes, which was greatly reduced (g = -0.04, 95% CI [-0.46, 0.37]) after removal of outliers and correction for publication bias, whereas the effect size for immediate perceptual gains was nearly medium (g = 0.56, 95% CI [0.13, 1.00]) compared with the nonsignificant production gains. Critically, the summary effect sizes for generalizations to new talkers (g = 0.72, 95% CI [0.15, 1.29]) and for long-term retention (g = 1.09, 95% CI [0.39, 1.78]) were large. Moreover, the training program length and the talker presentation format were found to potentially moderate the immediate perceptual gains and generalization outcomes. Conclusions: Our study presents the first meta-analysis on the role of talker variability in nonnative phonetic training, which demonstrates the heterogeneity and limitations of research on this topic. The results highlight the need for further investigation of the influential factors and underlying mechanisms for the presence or absence of talker variability effects. Supplemental Material: https://doi.org/10.23641/asha.16959388 pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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