Objective: This study compared differences in neurocognitive performance between TBI patients form an acute care setting, non-clinical participants from a forensic setting, and a normal control adolescent sample. Method: The LANSE-A is a measure designed to screen for neurocognitive deficits in adolescents 12.0 to 17.11 years of age. The acute care sample consisted of TBI adolescents from Valley Children's Hospital in Central California. The forensic sample was gathered from a Central California correctional institution. The normal control group was drawn from a similar geographic area. A three-group one-way between-subjects MANOVA was performed between normal control (N = 131), TBI (N = 129), and forensic (N = 179) groups (dependent variables). The independent variables were twelve subtest scores measuring neurocognitive performance across multiple domains. Results: The Box's M test was statistically significant (p < .001), necessitating the use of Pillai's trace to elevate multivariate effect. Results yielded a statistically significant multivariate...

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