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)

Presents a method of defining cooccurring constellations or "packages" of maternal facial-visual engagement and head or hand stimulation during face-to-face play with an infant. The functional relevance of these packages is documented in case studies of one four-month-old infant playing with his mother and a stranger. (Author/CB)