Objective: This study examined differences in age-related neurocognitive performance of children and adolescents (6.0 to 17.11 years of age) from two distinct cultural groups. It was hypothesized age-related performance would serve as a moderating variable and clarify the statistically significant differences between these groups demonstrated in previous research. Method: The Lebby-Asbell Neurocognitive Screening Examinations for Children (LANSE-C) and Adolescents (LANSE-A) are clinical screening measures for neurocognitive dysfunction across multiple domains. Subjects included English-speaking normal control children (N = 82) and adolescents (N = 132) and Spanish-speaking migrant children (N = 55) and adolescents (N = 42). Two-way between-subjects factorial multivariate analysis of variance were performed on children and adolescents using language and age-related performance as the dependent variables. The independent variables were 14 subtest scores from the LANSE-C/A. Results: Findings yielded significant multivariate main effects for language and age-related performance (p > .001). Interaction effects were also statistically significant, Pillai's...

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