Examines mother-infant gazing during periods of play, bottle feeding, and spoon feeding activities. Subjects were ten 3-month-old twin infants and their mothers. (BD)

It was concluded that both social and vocal elements are necessary to stimulate a general increase in the number and length of consonant utterances, but there was no evidence that stimulation encouraged infants to imitate the consonant phonemes presented. (Author)

Infants raised the pitch of their vocalizations when stimulated by vocalizing parents. Nonvocal stimulation did not repeat the effect. Intonation contours did not change during different conditions. The pitch of the parents' vocalizations also rose during vocal interaction. Changes in infant pitch were interpreted as a function of imitation.…

This longitudinal study of the development of nonverbal behavior in the first 3 years of a child's life focuses on four factors: the relation between physical and vocal interaction between the child and his mother, observed cuses which can be used to interpret the child's communicative intent at different age levels, frequency of occurrence and…

This paper reports on a longitudinal study involving 48 mother-infant dyads that attempts to explore the role of the caregiver-infant interactional environment in determining cognitive functioning as related to an understanding of environmental contingencies. The present report includes (1) a progress report to date of the longitudinal data…

This paper describes a cross cultural study of face to face interactions between American and Gusii mothers and their infants. Observations of the Gusii people of Western Kenya suggest that the direct expression of intense affect is de-emphasized through an avoidance of direct face to face interactions. The present study investigated (1) how and…