Objective: Neuropathological disorders (NPD) and traumatic brain injuries (TBI) are a leading cause of child and adolescent morbidity, necessitating efficient assessment of functioning that bridges the gap between mental status examination and comprehensive neuropsychological assessment. The Lebby-Asbell Neurocognitive Screening Examination for Children (LANSE-C) and adolescents (LANSE-A) meet this need. Previous multivariate analyses demonstrated excellent reliability, validity, specificity, sensitivity, and positive predictive power. We hypothesized that the analysis would clarify the internal structure of the LANSE-C/A thus supporting the rationale underlying the instrument's design. Method: The LANSE-C/A was administered to children and adolescents with (NPD) and (TBI) at Valley Children's Hospital, central California (n = 218) and to a norming sample (n = 218) from the hospital's surrounding area. Assessment data from the combined sample (N = 436) was subjected to an EQS structural equation model. Results: The hypothesized structural model and theoretical domains were affirmed thus supporting the clinical rationale...

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