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The Endowment for Human Development
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Right- and Left-Handedness


8 weeks

From The Biology of Prenatal Development.Buy Now

Script: 8 hafta içinde, embriyoların %75'i sağ el hakimiyeti sergiler. Geri kalanı ise eşit şekilde bölünmüştür: sol el hakimiyeti ile tercihi olmayanlar arasında. Bu, sağ ya da sol hakim davranışın en erken kanıtıdır.

All ages referenced to fertilization, not last menstrual period.
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