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Here’s why the majority of people are right-handed, according to study

Nypost · · 519 words · By Kyra Breslin
open_in_new Read the original article: https://nypost.com/2026/05/18/lifestyle/why-most-people-are-right-handed/

fact_checkFact-Check Results

12 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 5
info Single Source 3
help Insufficient Evidence 2
schedule Pending 2
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“90% of people who biologically identify as a “righty.””
CORROBORATED
The claim that approximately 90% of people are right-handed is supported by a cross-reference and general scientific consensus in the provided evidence.
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wikipedia NEUTRAL — An approximation is anything that is intentionally similar but not exactly equal to something else.
https://en.wikipedia.org/wiki/Approximation
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wikipedia NEUTRAL — The Hobby Lobby smuggling scandal started in 2009 when representatives of the Hobby Lobby chain of craft stores received a large number of clay bullae and tablets originating in the ancient Near East.…
https://en.wikipedia.org/wiki/Hobby_Lobby_smuggling_scandal
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wikipedia NEUTRAL — In computational learning theory, probably approximately correct (PAC) learning is a framework for mathematical analysis of machine learning. It was proposed in 1984 by Leslie Valiant. In this framewo…
https://en.wikipedia.org/wiki/Probably_approximately_correct…
+ 4 more evidence sources
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“A recent study from the University of Oxford reveals that this predisposed characteristic is actually a byproduct of how our brains formed, and more specifically, of learning to walk upright.”
CORROBORATED
Multiple independent web search results explicitly link a University of Oxford study to the theory that right-handedness is a byproduct of bipedalism and brain size expansion.
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wikipedia NEUTRAL — Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officia…
https://en.wikipedia.org/wiki/Oxford_University_Press
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wikipedia NEUTRAL — The University of Oxford is a collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the w…
https://en.wikipedia.org/wiki/University_of_Oxford
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wikipedia NEUTRAL — Oxford Brookes University (OBU; formerly known as Oxford Polytechnic) is a public university in Oxford, England. It is a new university, having received university status through the Further and Highe…
https://en.wikipedia.org/wiki/Oxford_Brookes_University
+ 3 more evidence sources
info
“Archeologists have traced evidence of right-hand dominance back to the Neolithic era”
SINGLE SOURCE
The provided evidence for this claim consists of general definitions of archaeology and lists of archaeological organizations, but does not mention the Neolithic era or specific evidence of right-hand dominance.
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web search NEUTRAL — The Archaeological Conservancy is the only national nonprofit organization that identifies, acquires, and preserves the most significant archaeological sites in the United States.
https://www.thearchcons.org/
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web search NEUTRAL — Excavations at Atapuerca, an archaeological site in Spain Archaeology or archeology[a] is the study of human activity through the recovery and analysis of material culture. The archaeological record c…
https://en.wikipedia.org/wiki/Archaeology
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web search NEUTRAL — The Archaeological Institute of America (AIA) is North America's oldest and largest organization devoted to the world of archaeology.
https://www.archaeological.org/
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“The data revealed that handedness is rooted in specific brain regions around the time bipedalism emerged.”
CORROBORATED
Multiple sources, including Neuroscience News and a study summary, link handedness to brain evolution and specialized brain regions associated with bipedalism.
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web search NEUTRAL — Mixed-handedness or cross-dominance is the change of hand preference between different tasks. This is about as widespread as left-handedness.[17] This is highly associated with the person's childhood …
https://en.wikipedia.org/wiki/Handedness
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web search NEUTRAL — The study places strong emphasis on the connection between handedness and brain evolution. According to the authors, hand preference is linked to specialized brain regions and differences between the …
https://blog.cognifit.com/standing-up-and-scaling-up-new-stu…
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web search NEUTRAL — Bipedalism and brain expansion explain human handedness. Humans exhibit a striking and near-universal population-level right-hand preference, an evolutionary singularity unmatched among primates.
https://neurosciencenews.com/bipedalism-brain-handedness-306…
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“When humans began walking, their unusually strong preference for hand dominance differed from that of other primate species, which still show more ambiguous forms of ambidexterity.”
CORROBORATED
Multiple web search results state that no other primate species shows a population-wide preference for hand dominance as strong as that seen in humans.
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web search NEUTRAL — No other primate species comes remotely close to showing such a strong population-wide preference. Scientists have spent decades trying to explain it through brain structure, genetics, tool use, or ev…
https://interestingengineering.com/culture/why-humans-are-ri…
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web search NEUTRAL — Hand preference seems to begin early, possibly even before birth, and it becomes more established over time. But none of that has fully answered the bigger question of why humans, unlike other primate…
https://www.yahoo.com/news/articles/strange-reason-nearly-hu…
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web search NEUTRAL — No other primate species comes close to it. For decades, evolutionary biologists could describe the pattern but not explain it.Strong individual hand preference, the study finds, evolved early in homi…
https://www.techtimes.com/articles/316782/20260518/oxford-st…
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“For humans, hand preference begins in utero and continues to consolidate during adolescence.”
SINGLE SOURCE
One web search result mentions hand preference beginning early, possibly before birth, but the other provided evidence consists of general prenatal development definitions without confirming the consolidation through adolescence.
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web search NEUTRAL — The development of the human embryo follows fertilization, and continues as fetal development. By the end of the tenth week of gestational age, the embryo has acquired its basic form and is referred t…
https://en.wikipedia.org/wiki/Prenatal_development
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web search NEUTRAL — theJournal of Human Development and Capabilities.
https://www.tandfonline.com/doi/full/10.1080/19452829.2025.2…
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web search NEUTRAL — What are the prenatal developmental stages and what happens during them?
https://www.verywellmind.com/stages-of-prenatal-development-…
info
“the more you defer to one hand or another, especially during early life, the more the body adapts and produces physical differences in bone shape, density, and strength.”
SINGLE SOURCE
The evidence provided discusses general bone differences between genders or general primate dexterity, but does not specifically confirm that hand dominance leads to physical changes in bone shape and density in early life.
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web search NEUTRAL — Distinction between hand dominance and hand preference in primates: a behavioral investigation of manual dexterity in nonhuman primates (macaques) and human subjects.
https://journals.plos.org/plosbiology/article/file?id=10.137…
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web search NEUTRAL — 13. Their bones are different. Women’s skeletal structures have wider hips, broader facial bones, smaller chins, a longer trunk, and shorter legs than men. 14. Women have more erogenous zones. A great…
https://thoughtcatalog.com/lorenzo-jensen-iii/2015/06/14-rea…
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web search NEUTRAL — Male and female bones have significant differences between them not only in terms of density but also in terms of structure. These differences are more pronounced in adults than in children, as many s…
https://www.geeksforgeeks.org/biology/difference-between-mal…
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““This is the first study to test several of the major hypotheses for human handedness in a single framework,” researcher Dr. Thomas A. Püschel said in the study.”
CORROBORATED
The exact quote from Dr. Thomas A. Püschel is found in multiple independent news sources reporting on the Oxford study.
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wikipedia NEUTRAL — Stephen Louis "Steve" Brusatte FRSE (born April 24, 1984) is an American evolutionary biologist and science popularizer who specializes in the anatomy and evolution of dinosaurs. He was educated at th…
https://en.wikipedia.org/wiki/Stephen_L._Brusatte
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wikipedia NEUTRAL — An accessory bone or supernumerary bone is a bone that is not normally present in the body, but can be found as a variant in a significant number of people. It poses a risk of being misdiagnosed as bo…
https://en.wikipedia.org/wiki/Accessory_bone
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wikipedia NEUTRAL — Hans Emil "Hannes" Meyer (18 November 1889 – 19 July 1954) was a Swiss architect and second director of the Bauhaus Dessau from 1928 to 1930.
https://en.wikipedia.org/wiki/Hannes_Meyer
+ 3 more evidence sources
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“The study also reveals a correlation between smaller-brained, less upright primates and more flexible hand preference, compared to humans’ overwhelming dominance of one side.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to support or refute this specific correlation.
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“engaging in daily activities with your non-dominant hand can temporarily force the brain to adapt and create new neural pathways through a process known as neuroplasticity.”
INSUFFICIENT EVIDENCE
No evidence was provided in the search results regarding the use of the non-dominant hand and the creation of new neural pathways via neuroplasticity.
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“Studies have shown that repeatedly practicing tasks with the opposite hand strengthens connections in regions associated with movement and coordination.”
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“The dominant hand tends to specialize in precision and fine motor control, and the non-dominant hand is often better at stabilization and support during movement”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.