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Another anecdote. I have fraternal twin boys. They were ambidextrous through the first year or so. I had a suspicion that one was left-handed, but he wasn't reliably left-handed. Going into year 3, one is reliably right-handed. The other one tends to left-handedness but will happily eat, brush his teeth, or draw using either hand. So I'm still not sure which ...


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Our pediatrician told us that you can often tell which hand a baby will prefer by watching which hand it brings to its mouth most often, especially for a self-soothing effect. She even claims that if you watch a baby in utero long enough, you can observe the same phenomenon before some babies are born. I don't have any scientific proof, but it has held true ...


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See this article: http://www.encyclopedia.com/topic/handedness.aspx Infancy In his pioneering work on child behavior, the American developmental psychologist Arnold Gesell claimed that infants as young as four weeks display signs of handedness and that right-handedness is clearly established by age one. However, it was as of 2004 commonly believed that ...



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