The joint trajectory analysis version of Nagin's ("Group-based modeling of development." Cambridge, MA: Harvard University Press, 2005) semiparametric, group-based approach for modeling trajectories was used to assess how boy's trajectories of conduct problems (CP) and neighborhood SES covaried from ages 5 to 12. Participants were…

This study followed a small group of children exposed to pre- and perinatal health threats to determine whether any psychological effects of the health threat could be identified and if so, whether there is potential in pediatric care to prevent such consequences. The 67 infants were all members of low income families. The tests used included the…

This document presents some of the major challenges facing Developmental Psychologists. Research revealed that middle class children tended to respond in classification tasks to objects and pictures as equivalents, whereas low class black children tended not to do so. The reason for this was investigated. This investigation of the course of…