Longitudinal Invariance of Measurement and Structure of Global Self-Concept: A Population-Based Study Examining Trajectories Among Adolescents With and Without Chronic Illness

OBJECTIVE: The objectives of this study were to determine whether a measure of global self-concept demonstrated longitudinal measurement invariance between adolescents aged 10-19 years with and without chronic illness and to document differences in their global self-concept trajectories over time. METHODS: Data were obtained from the National Longitudinal Survey of Children and Youth (N = 10,064). Global self-concept was measured using a scale …