Researchers in behavioral sciences are often interested in longitudinal behavior change outcomes and the mechanisms that influence changes in these outcomes over time. The statistical models that are typically implemented to address these research questions do not allow for investigation of mechanisms of dynamic change over time. However, latent…

Evolutionary theory and several lines of evidence suggest that the motive to establish positive relationships with others is stronger in females than males. Accordingly, it was predicted that in young children, girls would be more likely than boys to comply with their mothers' directives. To test this prediction, the present meta-analysis examined…

Studies investigating the development of memory processes and their neural substrates have flourished over the past two decades. The review by Jabès and Nelson (2015) adds an important piece to our understanding of the maturation of different elements and circuits within the hippocampal system and their association with the progressive development…

Although human infants demonstrate early competence to retain visual information, memory capacities during infancy remain largely undocumented. In three experiments, we used a Visual Paired Comparison (VPC) task to examine abilities to encode identity (Experiment 1) and spatial properties (Experiments 2a and 2b) of unfamiliar complex visual…

This study examined the role of children's trust beliefs and trustworthiness in the development of prosocial behavior using data from four waves of a longitudinal study in a large, ethnically-diverse sample of children in Switzerland (mean age = 8.11 years at Time 1, N = 1,028). Prosocial behavior directed towards peers was measured at all…

A head-mounted camera was used to measure head direction. The camera was mounted to the forehead of 20 6- and 20 12-month-old infants while they watched an object held at 11 horizontal (-80° to + 80°) and 9 vertical (-48° to + 50°) positions. The results showed that the head always moved less than required to be on target. Below 30° in the…

Despite consensus that development shapes every aspect of coping, studies of age differences in coping have proven difficult to integrate, primarily because they examine largely unselected age groups, and utilize overlapping coping categories. A developmental framework was used to organize 58 studies of coping involving over 250 age comparisons or…

Monkeys exposed to stress inoculation protocols early in life subsequently exhibit diminished neurobiological responses to moderate psychological stressors and enhanced cognitive control of behavior during juvenile development compared to non-inoculated monkeys. The present experiments extended these findings and revealed that stress inoculated…

The current article provides a review of adoption research since its inception as a field of study. Three historical trends in adoption research are identified: the first focusing on risk in adoption and identifying adoptee-nonadoptee differences in adjustment; the second examining the capacity of adopted children to recover from early adversity;…

Two experiments examined pictorial humor as an unusual but legitimate way to approach the study of children's representational activity and the transition from implicit to explicit knowledge. In both experiments, the participants were 3- and 4-year-old children. Experiment 1 studied the understanding of two pictorial jokes using two conditions,…

Given the rapid increase in studies of bullying and peer harassment among youth, it becomes important to understand just what is being researched. This study explored whether the themes that emerged from "children's" definitions of bullying were consistent with theoretical and methodological operationalizations within the research…

Discusses present trends in research, teaching, and practice in the field of behavioral development. Describes behaviorism and cognitivism as two basic theoretical influences on research in Brazil. An action-oriented approach prevails, including work with underprivileged and mentally retarded children. However, the number of published scientific…

Argues that exploration is a constrained behavior category relative to play and provides an economic illustration of behavioral elements during exploration and play. (MP)

Examines the capability and motivation of 18- and 24-month-old infants to share, help, comfort, and cooperate with their older siblings; the frequency of such prosocial behavior by both siblings; and the children's response to sibling distress. The relationship between prosocial and conflict behavior was also studied. (HOD)

Analyzes relationships between directly observed infant and mother behavior and infant temperament characteristics, as described in maternal ratings; separates the effects of different variance components in prediction of the observed behaviors; and explores possible interactions between infant sex and infant temperament in determining both infant…