The origin of cooperation is a central problem in evolutionary biology and social science. Cultural group selection and parochial altruism are popular but controversial evolutionary explanations for large-scale cooperation. Proponents of the cultural group selection hypothesis argue that the human tendency to conform—a consequence of our reliance on social learning— maintained sufficient betwee...

The current study examined the effect of empathy on friendship quality in the context of dyadic same-sex friendships, and how such an effect might be mediated by interpersonal competence. A special version of the actor-partner interdependence model (APIM) was used to examine this hypothesis in 146 same-sex friend dyads in 10th grade. Results showed that empathy was positively related to intimac...

This study examined the association between conflict negotiation and the expression of autonomy in adolescent romantic partners. Thirty-seven couples participated in a globally coded conflict interaction task. Actor-partner interdependence models (APIM) were used to quantify the extent to which boys' and girls' autonomy was linked solely to their own negotiation of the conflict or whether it wa...

OBJECTIVES To establish the inter- and intra-rater reliability of the Netball Movement Screening Tool, for screening adolescent female netball players. DESIGN Inter- and intra-rater reliability study. METHODS Forty secondary school netball players were recruited to take part in the study. Twenty subjects were screened simultaneously and independently by two raters to ascertain inter-rater a...

From the Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minn (Dr Jacobson); AcademyHealth, Washington, DC (Dr Fairbrother); Department of Pediatrics, Tufts Medical Center, Boston, Mass (Dr Sheldrick); and Department of Pediatrics, University of California Los Angeles, Calif (Dr Szilagyi) Conflict of Interest: The authors declare that they have no conflict of interest. ...

This study examined the association between youths' triangulation in marital conflict and three aspects of their peer relations in 416 families during early adolescence. A 4-wave, longitudinal research design was used. As hypothesized, triangulation was associated negatively with perceived support from friends and positively with perceived peer rejection. Triangulation was a risk factor for bot...

Longitudinal pathways between maternal mental health in infancy and offspring romantic relationship outcomes in adulthood were examined using a 30-year prospective longitudinal study of 196 mothers and their children. Structural equation modeling revealed that maternal mental health at 30 months was related to offspring relationship status and relationship attachment insecurity at 30 years. The...

The present study examined three sets of questions about secure base provision in the context of the family, including (1) relations between inter-parental perceptions of secure base provision and parents' adult romantic attachment and marital satisfaction, (2) interrelations among family members' perception of secure base provision, and (3) links between both adolescents' and parents' percepti...