Do mothers support and peers inhibit skilled object play in infancy?

Bakeman, 1984, Coordinating attention to people and objects in mother-infant and peer-peer interaction, Child Development, 55, 1278, 10.2307/1129997 Belsky, 1981, From exploration to play: A cross sectional study of infant free play behavior, Developmental Psychology, 17, 630, 10.1037/0012-1649.17.5.630 Bruner, 1984, Vygotsky's zone of proximal development: The hidden agenda, New Directions for Child Development, 23, 93, 10.1002/cd.23219842309 Cohen, 1960, A coefficient of agreement for nominal scales, Educational and Psychological Measurement, 20, 37, 10.1177/001316446002000104 Eckerman, 1977, Toys and social interaction between infant peers, Child Development, 51, 171 Goldman, 1978, Social skills in action: An analysis of early peer games Gunnar, 1984, Peer presence and the exploratory behavior of eighteen- and thirty-month-old children, Child Development, 55, 1103, 10.2307/1130163 Maudry, 1939, Social relations between children of the same age during the first two years of life, Journal of Genetic Psychology, 54, 193 Mueller, 1975, A developmental analysis of peer interaction among toddlers Ratner, 1978, Games, social exchange and the acquisition of language, Journal of Child Language, 5, 391, 10.1017/S0305000900002063 Rubenstein, 1976, The effects of peers on toddler interaction with mother and toys, Child Development, 47, 597, 10.2307/1128173 Rubenstein, 1979, Caregiving and infant behavior in daycare and in homes, Developmental Psychology, 15, 1, 10.1037/0012-1649.15.1.1 Tingley, 1988, Developmental effects of play partner on toddler's use of play dough Trevarthen, 1978, Secondary intersubjectivity: Confidence, confiding and acts of meaning in the first year Vygotsky, 1978