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Encouraging pointing with the right hand, but not the left hand, gives right-handed 3-year-olds a linguistic advantage
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Mumford, Katherine H., Aussems, Suzanne and Kita, Sotaro (2022) Encouraging pointing with the right hand, but not the left hand, gives right-handed 3-year-olds a linguistic advantage. Developmental Science . e13315. doi:10.1111/desc.13315 ISSN 1363-755x.
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Official URL: https://doi.org/10.1111/desc.13315
Abstract
Previous research has shown a strong positive association between right-handed gesturing and vocabulary development. However, the causal nature of this relationship remains unclear. In the current study, we tested whether gesturing with the right hand enhances linguistic processing in the left hemisphere, which is contralateral to the right hand. We manipulated the gesture hand children used in pointing tasks to test whether it would affect their performance. In either a linguistic task(verb learning)or a non-linguistic control task (memory),131 typically developing right-handed3-year-oldswere encouraged to use either their right hand or left hand to respond. While encouraging children to use a specific hand to indicate their responses had no effect on memory performance, encouraging children to use the right hand to respond, compared to the left hand, significantly improved their verb learning performance. This study is the first to show that manipulating the hand with which children are encouraged to gesture gives them a linguistic advantage. Language lateralisation in healthy right-handed children typically involves a dominant left hemisphere. Producing right-handed gestures may therefore lead to increased activation in the left hemisphere which may, in turn, facilitate forming and accessing lexical representations. It is important to note that this study manipulated gesture handedness among right-handers and does therefore not support the practice of encouraging children to become right-handed in manual activities.
| Item Type: | Journal Article | ||||||
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| Subjects: | B Philosophy. Psychology. Religion > BF Psychology P Language and Literature > P Philology. Linguistics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||||
| Library of Congress Subject Headings (LCSH): | Gesture, Pointing (Gesture), Speech and gesture, Children -- Language, Psycholinguistics | ||||||
| Journal or Publication Title: | Developmental Science | ||||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||
| ISSN: | 1363-755x | ||||||
| Official Date: | 4 September 2022 | ||||||
| Dates: |
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| Article Number: | e13315 | ||||||
| DOI: | 10.1111/desc.13315 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| Date of first compliant deposit: | 9 August 2022 | ||||||
| Date of first compliant Open Access: | 14 September 2022 | ||||||
| RIOXX Funder/Project Grant: |
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