Infants protest their mothers' attending to an infant-size doll

Twelve-month old infants (N = 76) experienced 4 situations of unresponsiveness in which their mothers and a stranger directed positive attention toward a doll or a picture book while they ignored the infant. Infants demonstrated more protest, negative vocalizations and inhibited play during the doll condition, particularly if the doll was held by the mother. Infant contacts with the mother were more frequent when the mother held the doll. Infants' distress during the mother/doll condition was interpreted as jealousy.