Presenting pictures of faces side by side is a common paradigm to assess infants' attentional biases according to social categories, such as gender, race, and language. However, seeing static faces does not represent infants' typical experience of the social world, which involves people in motion and performing actions. Here, we assessed infants'…

The stability of sex-typed behavior from the preschool to the middle school years was examined. The Preschool Activities Inventory, a measure of within-sex variation in sex-typed behavior, was completed by the primary caregiver when the child was 2.5, 3.5, and 5 years, and a modified version, the Child Activities Inventory, was completed by the…

This paper presents a new perspective on the transition from early to middle childhood (i.e., human juvenility), investigated in an integrative evolutionary framework. Juvenility is a crucial life history stage, when social learning and interaction with peers become central developmental functions; here it is argued that the "juvenile transition"…

Developmental Science aims to generate a new body of knowledge that encompasses and integrates findings from various well-defined academic disciplines concerned with developmental processes of human and non-human organisms. Although all development related research traditions surely have their own distinct history, certain theoretical ideas…

This article describes the average and group-based developmental trajectories of aggression, opposition, property violations, and status violations using parent reports of externalizing behaviors on a longitudinal multiple birth cohort study of 2,076 children aged 4 to 18 years. Trajectories were estimated from multilevel growth curve analyses and…

Examines the biological, psychological, and social developmental changes that characterize the years from 6 to 14, and highlights ways in which the organization of programs, schools, and family life can support positive outcomes for youth. In these years children forge a personal identity and form a self-concept and orientation toward achievement…

A study tracked the developmental and behavioral recovery of infants and preschool children (N=12) who had suffered brain injuries. Significant developmental recovery and behavioral progress occurred during the first 3.5 to 4 months following insult. However, self-stimulatory and atypical rhythmic habit patterns increased as the children passed…

It is only natural for parents to wonder occasionally if the development of their preschool child is going well. Noting that psychologists have developed many normative scales to indicate how an individual child compares with others of the same age in similar populations, this parent brochure provides guidance for evaluating a child's behavior and…

The study reported in this paper traces the nature of the changes which take place as the child gradually acquires perspective-taking skills. The results indicate that at first the young child can correctly represent only the location of the object nearest another observer; later, he can correctly represent a before-behind relationship between…

Observations of 22 preschool children with cognitive delays during home-based play, made approximately 13 months apart, found no statistically significant change for the proportion of time spent in various categorical play behaviors. Children's relative ranking on play sophistication also remained stable. Significant changes were found in…

Reviews and integrates several aspects of peer interaction in the infant/toddler period. Reveals convergence between age-related changes in social skills and similarly timed cognitive developments. (HOD)

This study of the oral motor behaviors of seven toddlers (age 15 months) may be interpreted to indicate that: (1) mandibular coordination follows a developmental continuum from earlier emerging behaviors, such as chewing and sucking, through babbling, to speech, or (2) unique task demands give rise to distinct mandibular coordinative constraints…

Notes that many researchers have asserted maternal "sensitivity" as the key feature of interactions promoting "secure" attachment relationships. Reviews literature addressing the construct of sensitivity, highlighting the problem of definition and identifying the range of behaviors typically used as indicators of sensitivity.…

Contrasts a child not ready for school with a child who is developmentally prepared to enter school and argues that if all school systems could administer and interpret the results of a developmental examination, the number of unhappy children, special needs children, and grade overplaced children would be greatly reduced. (HOD)

Results showed a number of significant developmental changes in students' nonverbal communication as perceived by teachers. (PD)