This study evaluates the psychometric properties of a verbal fluency task for potential use as an outcome measure in future clinical trials involving children with Down syndrome. Eighty-five participants attempted a modified version of the Neuropsychological Assessment of Children, Second Edition Word Generation Task at two time points. In the full sample, the measure fell below a priori reliability and feasibility criteria, though feasibility of the semantic trials were higher than feasibility of the phonemic trials. Performance on the measure correlated with chronological age and IQ scores, and no sex-related effects were found. Additional analyses suggested that the semantic verbal fluency trials might be appropriate for children with Down syndrome 10 years of age and older.

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