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A large-scale population study of early life factors influencing left-handedness

Open access
de Kovel, Carolien G. F., Carrión-Castillo, Amaia, Francks, Clyde·2019·Scientific Reports

Abstract

Hand preference is a conspicuous variation in human behaviour, with a worldwide proportion of around 90% of people preferring to use the right hand for many tasks, and 10% the left hand. We used the large cohort of the UK biobank (~500,000 participants) to study possible relations between early life factors and adult hand preference. The probability of being left-handed was affected by the year and location of birth, likely due to cultural effects. In addition, hand preference was affected by birthweight, being part of a multiple birth, season of birth, breastfeeding, and sex, with each effect remaining significant after accounting for all others. Analysis of genome-wide genotype data showed that left-handedness was very weakly heritable, but shared no genetic basis with birthweight. Although on average left-handers and right-handers differed for a number of early life factors, all together these factors had only a minimal predictive value for individual hand preference.

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Metadata

Authors
de Kovel, C. G. F., Carrión-Castillo, A., & Francks, C.
Venue
Scientific Reports
Published
2019-01-24
Volume
9
Issue
1
Pages
584-584
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2912157499
Cited by
189
References
5
FWCI
11.90
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: A large-scale population study of early life factors influencing left-handedness. https://app.cochat.ai/papers/10.1038/s41598-018-37423-8
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de Kovel, C. G. F., Carrión-Castillo, A., & Francks, C. (2019). A large-scale population study of early life factors influencing left-handedness. Scientific Reports. https://doi.org/10.1038/s41598-018-37423-8

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