A review of several studies indicates in utero experience influences infant's preference for maternal voice. Sensory development in the prenatal period allows the baby to engage the environment socially at birth and before. The tactile sense is the first to develop parentally and the most refined sense at birth. Auditory development is completed during the prenatal period. Auditory ability gives us the clearest picture of prenatal learning. Newborn babies show a marked preference for voices heard during the prenatal period. DeCasper and Spence (1986) demonstrated that babies recognize a story read to them twice a day in the last six weeks of pregnancy when compared to an unfamiliar story that was heard for the first time after birth. A study by DeCasper and Fiefer (1980) indicates that infants as young as three days old prefer their mothers voice which may be a result of their prenatal exposure to the...