Self-recognition emerges during the second year of life and represents the emergence of a reflective self, a metacognition which underlies self-conscious emotions such as embarrassment and shame, perspective taking, and emotional knowledge of others. In a longitudinal study of 171 children, two major questions were explored from an extant…

Longitudinal data from 746 adolescents in Toronto, Canada (54% females), was gathered in eight waves over seven years (1995 through 2001), beginning when the youths were 10 to 12 years old (mean age = 11.8, SD = 1.2 years). Five trajectories of substance use were identified: chronic-high, childhood onset-rapid high, childhood onset-moderate,…

The aim of this prospective study was to identify preschool factors that are associated with children's classroom engagement during their 1st school year. The study was guided by a social-motivational process model that highlights the importance of parent-child and teacher-child relationships in promoting engagement. In preschool, parents and…

Children's security of attachment to their mothers at age 18 months and their effective autonomous functioning at two years were related to the dimensions of ego-control and ego-resiliency at age four to five years. (JMB)

This document provides data from an ongoing longitudinal study of the degree of continuity in individual development over time and describes the complexities involved in efforts to determine the nature of individual continuity. Findings from the Minnesota Longitudinal Study of children in a day camp provide evidence for continuity in individual…