Elementary school students (n = 330) and their parents (n = 228) participated in a 3-year longitudinal study of the temporal relation between anxiety and depressive symptoms in children. Every 6 months, children and parents completed depression and anxiety questionnaires for a total of 6 waves. Structural equation modeling revealed that individual differences on all measures were remarkably stable over time. Nevertheless, high levels of anxiety symptoms at 1 point in time predicted high levels of depressive symptoms at subsequent points in time even after controlling for prior levels of depression symptoms. These findings were consistent across self- and parent reports. Results support the temporal hypothesis that anxiety leads to depression in children and adolescents.

The development of child and adolescent self-concept was examined as a function of the self-concept domain, social/developmental/educational transitions, and gender. In two overlapping age cohorts of public school students (Ns = 936 and 984), five dimensions of self-concept were evaluated every 6 months in a manner that spanned grades 3 through 11 (representing the elementary, middle, and high school years). Domains of self-concept included academic competence, physical appearance, behavioral conduct, social acceptance, and sports competence. Structural equation modeling addressed questions about the stability of individual differences over time. Multilevel modeling addressed questions about mean-level changes in self-concept over time. Significant effects emerged with regard to gender, age, dimension of self-concept, and educational transition.

A total of 807 third and sixth graders completed questionnaires about their academic competence, feelings of depression, and symptoms of anxiety, every 6 months for 3 years. Teachers provided objective measures of academic competence. Compared to teachers' ratings, boys overestimated and girls underestimated their academic competence. Gender differences first emerged in fourth or fifth grade and increased through eighth grade. Symptoms of depression and anxiety were negatively associated with academic overestimation. Furthermore, controlling for depression and anxiety eliminated most of the gender differences in academic over- and underestimation. Finally, self-reported depression and anxiety predicted changes in the tendency to overestimate academic competence over time. Evidence of the reverse relation was much weaker.

Teacher, parent, peer, and self-ratings of depression and anxiety symptoms were obtained from 280 3rd-grade and 211 6th-grade children. Confirmatory factor analysis of these multitrait-multimethod data for 3rd graders revealed low but statistically significant levels of convergent validity, high levels of method variance, and an extremely high correlation between the depression and anxiety factors, even after controlling for shared method variance. Similar analyses of 6th graders revealed slightly higher levels of convergent validity and a somewhat smaller correlation between the depression and anxiety factors. The data support a unified construct model for younger children and are consistent with either a dual factor or a tripartite model of depression and anxiety in older children.

Children in Grades 3-8 participated in a longitudinal study of the relation between negative self-evaluation errors and symptoms of depression. Children's self-perceived competence in 5 domains (academic, social, athletic, appearance, and conduct) was compared with teachers' and peers' perceptions. Children's tendency to underestimate their competencies predicted increases in depression scores in only 1 of 6 grade levels. Children's depression scores predicted increases in the underestimation of self-competence over time in all grade levels. Gender differences and developmental differences in the cognitive errors associated with depression scores also emerged. Contrary to A. T. Beck's (1963, 1972) model, negative self-distortions appear to be more reflective than predictive of depression in children.