Individual differences in music traits are heritable and correlated with the development of cognitive and communication skills, but little is known about whether diverse modes of music engagement (e.g., playing instruments vs. singing) reflect similar underlying genetic/environmental influences. Moreover, the biological etiology underlying the…

Experiencing the moral emotions of gratitude and moral elevation are responses to witnessing virtuous deeds of others. Both emotions have been found to share similar features and behavioral consequences, including the stimulation of personal development. The broaden-and-build theory of positive emotions indicates that gratitude and elevation…

Recursive partitioning is an analytic technique that is useful for identifying complex combinations of conditions that predict particular outcomes as well as for delineating multiple subgroup differences in how such factors work together. As such, the methodology is well suited to multidisciplinary, life course inquiry in which the goal is to…

For both boys and girls, all adolescent effects are reversals of significant preadolescent effects. These reversals, predictive of adult health, can be commonly described as a change from a relatively tension-free or conflict-free preadolescence to a reactive and stressful adolescence. (Author)

Reports three studies that examined developmental changes in the integration of ability and effort information to predict performance. Children aged 6-11 years and adults were used as subjects. Findings involved developmental progression in the integration process, use of both cues in forming judgements, and the importance of effort. (Author/SDH)

Discusses research on human development from an interactional perspective; methodological problems connected with interindividual differences in biological maturation (using empirical studies from a longitudinal program); and major implications for further development research in an interactional perspective. (Author/BE)