Age and sex effects in multiple dimensions of self-concept were examined in responses by 3,562 preadolescent students (grades 2 to 6) to the Self Description Questionnaire (SDQ). A factor analysis of responses clearly identified the seven facets of self-concept which the SDQ is designed to measure: physical ability, physical appearance, peer…

The self-concept construct has been used to explain behaviors across a diverse array of situations, and the attainment of a positive self-concept has been posited as a desirable goal in developmental psychology. The purposes of this study were to examine age and sex effects in multiple dimensions of self-concept during the preadolescence to…

Two studies examined second- through fifth-grade children's negative-item bias with responses to the Self Description Questionnaire and how it is related to cognitive development and reading achievement. Results showed that younger children and poorer readers responded less appropriately to negative items, thus biasing the interpretations of their…

Confirmatory factor analysis of responses by 211 preadolescents (M age = 10.25 years,SD = 1.48) with mild intellectual disabilities (MIDs) to the individually administered Self Description Questionnaire I-Individual Administration (SDQI-IA) counters widely cited claims that these children cannot differentiate multiple self-concept factors. Results…

The Self Description Questionnaire II (SDQII) results from 901 Australian secondary school students were factor analyzed and the factors correlated to identify the relationship of self-concept factors to age, sex, and academic achievement. Findings supported the multidimensionality of self-concept and support the construct validity of the SDQII.…

This analysis of 12,266 responses to the 3 Self-Description Questionnaires (which measure dimensions of self-concept in preadolescence) examined age and sex effects during preadolescence and early adulthood and alternative operationalizations of the proposition that self-concept becomes more differentiated with age. Well-defined factor structures…

Examined how separation of competency and affect components of self-concept domains varied in 7- to 13-year-olds. Found that Self-Description Questionnaire factor loadings were invariant over age comparisons. Correlations among reading, math, and school self-concepts decreased with age. Correlations between competency and affect within domains…

Used new administration procedure of Self Description Questionnaire to assess dimensions of young children's self-concept in a multicohort-multioccasion study. Found that the scale's reliability and stability improved with age and from one year to the next. Gender differences were stable over age. Time 1 teacher ratings contributed to the…

A new adaptive procedure for assessing multiple dimensions of self-concept for children younger than 8 years was studied with a sample of 501 children from kindergarten through grade 2. Use of the Self-Description Questionnaire with young children was supported by factor analysis. Practical and theoretical implications are discussed. (SLD)