Fluency measures are commonly used in clinical developmental neuropsychology to assess executive functions. Little is known about the effect of age on performance in these tests. This article analyzes the effect of age on measures of verbal (semantic and phonologic) and nonverbal (semantic and nonsemantic) fluency in 171 children (81 boys, 90 girls) between ages 6 and 15. Participants were selected from public and private schools in Guadalajara and Tijuana, Mexico. A significant age effect was found on all tests but no interaction between age and type of test was found. Significant correlations among the 4 fluency tasks ranged from.36 to.46. Results are consistent with the findings of normative studies carried out in other countries and support the cross-language validity of verbal fluency tests.

The goal of this study was to examine executive functioning outcomes in children with hemophilia who have suffered intracranial hemorrhage. We assessed 10 boys with hemophilia with intracranial hemorrhage; 6 boys with hemophilia without intracranial hemorrhage; and 10 healthy boys as controls. Intellectual functioning was assessed with subscales from the Wechsler Intelligence Scale for Children-Mexican Revision. Concept formation and reasoning, cognitive flexibility, and planning and organization domains from a neuropsychological assessment battery for Spanish-speaking children were employed for our analysis. Results indicated that children with intracranial hemorrhage demonstrated significant impairment on some measures of executive function compared with the control groups. All differences reflected poorer performance by the intracranial hemorrhage group. These results may reflect the impact of disruption to immature brain circuits and the deficiency of functional specificity within the immature brain. This is the only known study examining neuropsychological functioning in Mexican youth with hemophilia.