Left-handedness develops before birth

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About 10.6% of humans are left-handed (Papadatou-Pastou et al., 2020). One of the longstanding questions in scientific research on left-handedness is, at which point in life it actually develops. One commonly held idea is that it is possible to know for certain whether a child is left-handed or not once he or she starts writing. However, scientific studies show that left-handedness actually develops much earlier to in primary school. In fact, it actually develops before we are even born. Scientists have investigated left-handedness in unborn babies using real-time ultrasound recording in order to track the movements of their arms and …read more

Source: Sott health news feed

    

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