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3
votes
2answers
109 views

Is handedness predetermined genetically?

A follow up question to When will we know if our child is left- or right-handed?. Is handedness predetermined genetically? Or is it something the baby somehow learns, or maybe it is a result of some ...
8
votes
2answers
750 views

When will we know if our child is left- or right-handed?

Out of curiosity: At what age does one hand gain "advantage" over the other? When do motor skills start differentiating for arms?