Answer :
According to Decasper and Spence (1986), when mothers read the Cat in the Hat to their fetuses and then to their children after birth, infants do not remember sounds heard during pregnancy.
DeCasper and Fifer demonstrated that newborns would suck more to hear a tape of their mother's voice than a tape of a stranger's voice using a nonnutritive nipple attached to a sensing apparatus. They must have become acquainted with the mother's voice while still in the womb because they were newborns. DeCasper and Fifer demonstrated that newborns would suck more to hear a tape of their mother's voice than a tape of a stranger's voice using a nonnutritive nipple attached to a sensing apparatus.
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