What is the impact of maternal cocaine addiction on baby's motor development?

Not good. Maternal Cocaine addiction can lead to microcephaly (small head) and growth retardation in infants. Cocaine may also interfere with maternal-infant bonding, as some research shows the mothers are less flexible, less engaged, and have shorter feeding sessions than other mothers with newborns. Even at 2 years of age, the infants show deficiencies in both fine and gross motor development.