Prenatal thumb sucking is related to postnatal handedness

  title={Prenatal thumb sucking is related to postnatal handedness},
  author={P. Hepper and D. Wells and C. Lynch},
  • P. Hepper, D. Wells, C. Lynch
  • Published 2005
  • Psychology, Medicine
  • Neuropsychologia
  • This study followed-up 75 individuals who were observed sucking their thumb as fetuses and examined their handedness, assessed by a modified version of the Edinburgh Handedness Inventory, at 10-12 years of age. Of 60 right-handed fetuses, all were right-handed postnatally; 10 of 15 left-handed fetuses were left-handed and five right-handed. Male left thumb sucking fetuses were more likely to be right-handed children than females. The study indicates that the prenatal exhibition of lateralised… CONTINUE READING
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