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  1. Handedness - Wikipedia

    Handedness is often defined by one's writing hand. It is fairly common for people to prefer to do a particular task with a particular hand. Mixed-handed people change hand preference depending on …

  2. Is handedness determined by genetics? - MedlinePlus

    Handedness, or hand preference, is the tendency to be more skilled and comfortable using one hand instead of the other for tasks such as writing and throwing a ball.

  3. Differences Between Left- and Right-Handedness - WebMD

    Jun 26, 2025 · Scientists have long known that handedness is partly shaped by genes. But it wasn’t until 2019 that they identified differences in parts of the DNA of left- and right-handers.

  4. Left-Handedness and Brain Asymmetries: How Are They Linked?

    2 days ago · Key points Left-handedness is a form of brain asymmetry. Other brain asymmetries have been observed for language, faces, and bodies. A neuroimaging study showed that left-handers had …

  5. What causes some people to be left-handed, and why are fewer people ...

    Jun 21, 2004 · Clare Porac, a professor of psychology at Pennsylvania State University who studies handedness, explains. Researchers who study human hand preference agree that the side of the …

  6. Handedness | physiology | Britannica

    handedness, a tendency to use one hand rather than the other to perform most activities; it is the usual practice to classify persons as right-handed, left-handed, or ambidextrous.

  7. Left, right, or ambidextrous: What determines hand preference?

    Aug 4, 2017 · Scientists have begun to unravel the mystery of handedness. The hand that we write with is partially determined by a handful of genes. The preference for using one hand to write and perform …

  8. Origins of Handedness: A nationwide study of 30161 adults

    Handedness has been studied for years and several theories of the origins of left-handedness have been proposed, yet the determinants of human handedness are not clearly known. It is suggested …

  9. Handedness | A Simplified Psychology Guide

    Handedness is a characteristic trait that is prevalent in most individuals, where they consistently favor either their right hand or left hand when engaging in activities that require fine motor skills or manual …

  10. Is your dominant hand something you’re born with or something you ...

    Jul 16, 2019 · Being ambidextrous usually means that you can use both hands equally well. Being mix-handed means that you prefer different hands for different tasks. Very few people are either …