In this review, we evaluate developmental and personality research with the aim of determining whether the personality trait of conscientiousness can be identified in children and adolescents. After concluding that conscientiousness does emerge in childhood, we discuss the developmental origins of conscientiousness with a specific focus on…

The LPR and STin2 polymorphisms of the serotonin transporter gene (SLC6A4) were combined into haplotypes that, together with quality of maternal parenting, were used to predict initial levels and linear change in children's (N = 138) noncompliance and aggression from age 18-54 months. Quality of mothers' parenting behavior was observed when…

Examined consistency in prosocial dispositions, using longitudinal data from preschool through early adulthood. Found that spontaneous prosocial behavior observed in preschools predicted actual prosocial behavior, other- and self-reported prosocial behavior, self-reported sympathy, and perspective taking in childhood to early adulthood. Prosocial…

Examined behavioral consistency pressures of 146 children in preschool through fifth grade. Results indicated that cognitive understanding of traits and intrapersonal preference for consistency moderate immediate effects of the foot-in-the-door procedure. (RJC)