Results are discussed in terms of cognitive growth, the psychoanalytic notion of ambivalence, the role of stimulus context in eliciting laughter or fear, and a possible adaptive, stimulus-maintaining function of laughter. (Authors)

The main objective of the present investigations was to determine whether or not young human infants see the physical spectrum in a categorical fashion as human adults and animals who possess color vision regularly do. (Author)

Purpose of the study was to determine whether a name for a toy affects an infant's attentional preference for a toy and whether this process is related to the infant's concept of subject permanence. (Authors)

A study was conducted to measure the degree to which groups of infants could generalize color across objects of different forms and sizes and generalize from across objects of different color and sizes and to see whether color or form would dominate in their generalizations. Ss were 8-13-month-old Caucasian infants. All tests had 16 Ss except the…

This experimental study has three aims: (1) to give a detailed description of imitative behavior as it develops during the first six months of life; (2) to compare imitative responses perceived through visual, kinesthetic and auditory modalities; and (3) to describe and explain the regulating mechanisms and processes present in the early…

This longitudinal study investigated mother-infant interaction patterns and infant social and emotional development as influenced by maternal and non-maternal infant care and by selected maternal and infant characteristics. Extensive data (including maternal attitude scores, demographic infomration, infant care observations, developmental test…