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dc.contributor.authorPackheiser, Julian
dc.contributor.authorSchmitz, Judith
dc.contributor.authorArning, Larissa
dc.contributor.authorBeste, Christian
dc.contributor.authorGüntürkün, Onur
dc.contributor.authorOcklenburg, Sebastian
dc.identifier.citationPackheiser , J , Schmitz , J , Arning , L , Beste , C , Güntürkün , O & Ocklenburg , S 2020 , ' A large-scale estimate on the relationship between language and motor lateralization ' , Scientific Reports , vol. 10 , 13027 .
dc.identifier.otherPURE: 271217111
dc.identifier.otherPURE UUID: 18472975-0b79-404c-8271-57c8fbcf227e
dc.identifier.otherJisc: 5943dbf8ac6b49ee831887145339dc65
dc.identifier.otherpublisher-id: s41598-020-70057-3
dc.identifier.othermanuscript: 70057
dc.identifier.otherScopus: 85088933487
dc.identifier.otherWOS: 000556395100024
dc.descriptionThis study was supported by grants of the Deutsche Forschungsgemeinschaft (GU227/16-1; BE4045/26-1) as well as through the DFG Research Training Group “Situated Cognition” (GRK 2185/1). This study was also supported by the Ruhr University Bochum Cutting-Edge grant. We acknowledge support by the DFG Open Access Funds of the Ruhr-Universität Bochum.en
dc.description.abstractHuman language is dominantly processed in the left cerebral hemisphere in most of the population. While several studies have suggested that there are higher rates of atypical right-hemispheric language lateralization in left-/mixed-handers, an accurate estimate of this association from a large sample is still missing. In this study, we comprised data from 1,554 individuals sampled in three previous studies in which language lateralization measured via dichotic listening, handedness and footedness were assessed. Overall, we found a right ear advantage indicating typical left-hemispheric language lateralization in 82.1% of the participants. While we found significantly more left-handed individuals with atypical language lateralization on the categorical level, we only detected a very weak positive correlation between dichotic listening lateralization quotients (LQs) and handedness LQs using continuous measures. Here, only 0.4% of the variance in language lateralization were explained by handedness. We complemented these analyses with Bayesian statistics and found no evidence in favor of the hypothesis that language lateralization and handedness are related. Footedness LQs were not correlated with dichotic listening LQs, but individuals with atypical language lateralization also exhibited higher rates of atypical footedness on the categorical level. We also found differences in the extent of language lateralization between males and females with males exhibiting higher dichotic listening LQs indicating more left-hemispheric language processing. Overall, these findings indicate that the direct associations between language lateralization and motor asymmetries are much weaker than previously assumed with Bayesian correlation analyses even suggesting that they do not exist at all. Furthermore, sex differences seem to be present in language lateralization when the power of the study is adequate suggesting that endocrinological processes might influence this phenotype.
dc.relation.ispartofScientific Reportsen
dc.rightsCopyright © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
dc.subjectCognitive neuroscienceen
dc.subjectRC0321 Neuroscience. Biological psychiatry. Neuropsychiatryen
dc.titleA large-scale estimate on the relationship between language and motor lateralizationen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Medicineen
dc.description.statusPeer revieweden

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