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Ross, Gail; And Others – Developmental Psychology, 1975
Descriptors: Age Differences, Attachment Behavior, Family Environment, Infant Behavior

Contole, Julie; Over, Ray – Journal of Experimental Child Psychology, 1981
Six infants were filmed at 15 and 30 weeks of age while alone and in the presence of an adult (mother or stranger) who interacted with the infant or remained passive. Signal detection analysis of ratings made by judges showed that infant behavior at both ages varied in accord with whether or not an adult was present. (Author/DB)
Descriptors: Age Differences, Cues, Foreign Countries, Infant Behavior

Ragozin, Arlene S. – Child Development, 1980
Relationships between day care and attachment were assessed with alternative procedures: (1) hypothesized normal patterns of attachment were tested naturalistically in day-care centers; (2) day-care and home-reared children were compared in a laboratory setting. (Author/MP)
Descriptors: Age Differences, Attachment Behavior, Behavior Patterns, Comparative Analysis
Brooks, Jeanne – 1974
This paper presents two studies of the development of social competencies in infancy. In the first experiment, the central issue investigated was whether facial configuration or height is utilized by infants to respond differentially to children and adults. Five different strangers, a male and a female child, a male and a female adult, and a small…
Descriptors: Adults, Age Differences, Body Height, Children