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Peer reviewedLamb, Michael E.; Malkin, Catherine M. – International Journal of Behavioral Development, 1986
Filmed 30 infants monthly between one and seven months of age where mothers or unfamiliar women responded to their cries by picking up or talking to the infants. Results suggest that infants develop conditioned associations among distress-relief patterns by one month, and cognitive expectations by four or five months. (Author/BB)
Descriptors: Adult Child Relationship, Age Differences, Child Development, Cognitive Structures
