| Abstract: | Stepping movements were investigated for evidence of early motor asymmetry in 24 familial right-handed infants and 14 familial left-handed infants at each of five ages: 2–3 days after birth, 14 days, and 1, 2, and 3 months of age. Results indicated a nonsignificant right leg advantage during the newborn period, with few significant lateral preferences evidenced in either direction at later testing ages. These results fail to indicate that a reliable leg preference persists beyond the newborn period, particularly among familial right-handed infants. Thus, it seems unlikely that an asymmetry in stepping movements during early infancy marks the beginning of a direct developmental path that culminates in a motor asymmetry in later childhood. |
