"The study titled 'Prenatal Maternal Stress and Weak Handedness in Early Childhood: The Iowa Flood Study' found that higher post-traumatic stress in mothers during pregnancy was linked to higher mixed-handedness in children."
"Genetics plays a substantial role in handedness, but several factors before and during birth, such as maternal stress, also influence whether someone becomes left-handed or not."
Left-handedness is influenced by genetic and non-genetic factors. A new study examined the impact of maternal post-traumatic stress on children's handedness. It found that higher levels of stress in mothers during pregnancy correlated with increased instances of mixed-handedness in toddlers. The research utilized data from the Iowa Flood Study, which collected psychological information from pregnant women affected by a significant flood. This study adds to the understanding of how prenatal factors can affect handedness in children.
Read at Psychology Today
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