This paper addresses several issues concerning the nature of imitative acts and the conditions under which they take place. These issues include: (1) the separation of imitative acts from reinforced behavior; (2) the separation of true imitative acts from reflexive acts; (3) the separation of imitative acts from acts which normally have a high…

Argues for a constructivist theoretical approach to the developmental study of the self, an approach which focuses on self-other differentiation and acquisition of categories of self. (SS)

This study examined the effects of prenatal cocaine exposure, environmental risk, and maternal verbal intelligence on children's cognitive ability. Gender and age were examined as moderators of potential cocaine exposure effects. The Stanford-Binet IV intelligence test was administered to 231 children (91 cocaine exposed, 140 unexposed) at ages 4,…

This study examined the effect of different types of loss of control on the quality and quantity of the frustration response in 4- to 6-month-old infants. To establish an expectancy, all infants received 4 minutes of contingency training in which infants were presented with slides and music after they performed a pulling response with their right…

This study was designed to test two alternate hypotheses regarding the meaning of increased lateral head movements in infants during experiments in which the mothers' voices were displaced from their faces. One interpretation is that the lateral looking responses of the infants are attributable to maturational effects on the infants' physiological…

Examines whether novelty produces more or less attention than familiarity and incongruity, and whether children's learning behavior is related to these differences in attention. Subjects were 43 three- to five-year-old children. (BD)

Suggests that the central focus of the article by Raver and Leadbeter (PS 521 712) in this issue is the ways individuals know. Examines two ways of knowing, verbal responses to questions and action without verbal response; and outlines a four-level developmental sequence of knowing that develops from one's own knowing to having a perspective on…

Portions of this paper were presented at the 1967 meeting of the Society for Research in Child Development, New York.

The function of this paper is to initiate a discussion of the kinds of questions that should be asked when one considers what kind of environment is needed in the year 2000 to optimize human growth and development. More specifically, the paper focuses on the problems of the infant and young child in the 21st century urban environment. The essay is…

This study was interested in determining whether (1) novelty produces greater or less attention than familiarity and incongruity, and (2) if children's labeling behavior was related to their attentive behavior. Using 3- to 5-year-old children, the results indicate that attention, at least for the stimuli presented, is an increasing function from…

Studies 174 mother-infant dyads to determine the relation between 3-month-old infant, mother, and mother-infant interaction behavior and later attachment behavior. Individual infant differences in sociability at 3 months were found to be related to avoidant behavior and A-type attachment. (RJC)

Examines the development of social networks from middle childhood to adolescence based on a longitudinal sample of 100 children. Age changes, sex differences, and the relation between network characteristics and self-perceived competence are considered. Adolescent girls' social networks are larger than boys' and are also more related to specific…

This study examined the relation of visual self-recognition to personal pronoun use and pretend play. For a longitudinal sample (N66) at the ages when self-recognition was emerging (15, 18, and 21 months), self-recognition was related to personal pronoun use and pretend play such that children showing self-recognition used more personal pronouns…