Prospectively followed girls with attention-deficit/hyperactivity disorder (ADHD), along with a matched comparison sample, five years after childhood neuropsychological assessments. Follow-up neuropsychological measures emphasized attentional skills, executive functions, and language abilities. Paralleling childhood findings, the childhood-diagnosed ADHD group displayed moderate to large deficits in executive/attentional performance as well as rapid naming, relative to the comparison group, at follow-up (M age = 14.2 years). ADHD-Inattentive vs. ADHD-Combined contrasts were nonsignificant and of negligible effect size, even when a refined, "sluggish cognitive tempo" subgroup of the Inattentive type was examined. Although ADHD vs. comparison differences largely withstood statistical control of baseline demographics and comorbidities, control of childhood IQ reduced EF differences to nonsignificance. Yet when the subset of girls meeting diagnostic criteria for ADHD in adolescence were compared to the remainder of the participants, neuropsychological deficits emerged even with full statistical control. Overall, childhood ADHD in girls portends neuropsychological and executive deficits that persist for at least 5 years.Keywords attention-deficit hyperactivity disorder (ADHD); neuropsychology; executive function; longitudinal research; girls Neuropsychological measures tap a range of functions, including attention, inhibition, motor speed, and linguistic abilities. The construct of executive function (EF) refers to those neuropsychological skills, deemed essential for performance of complex human tasks, related to planning, set maintenance, set shifting, interference control, and working memory (e.g., Barkley, 1997;Pennington & Ozonoff, 1996). Considerable evidence exists that, in contrast Address correspondence to Stephen P. Hinshaw, Department of Psychology, Tolman Hall #1650, University of California, Berkeley, CA 94720-1650 (hinshaw@berkeley.edu).
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Author ManuscriptNeuropsychology. Author manuscript; available in PMC 2010 September 1.
Published in final edited form as:Neuropsychology.
NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript to non-diagnosed comparison individuals, samples of children and adults with attention-deficit/ hyperactivity disorder (ADHD) show significant neuropsychological deficits, particularly those linked with EF (see, for example, Hinshaw, Carte, Sami, Treuting, & Zupan, 2002;Klorman et al., 1999; Nigg, Blaskey, Huang-Pollack, & Rappley, 2002;Seidman, Biederman, Faraone, Weber, & Ouellette, 1997;Seidman et al., 2005; see reviews of Barkley, Grodzinsky, & duPaul, 1992;Hervey, Epstein, & Curry, 2004;Seidman et al., 2004; Sergeant, Guerts, & Oosterlaan, 2002). Such deficits appear on a number of different tests and are largely independent of comorbid conditions that accompany ADHD Seidman et al., 1997). Because EF deficits are particularly likely to predict continuing academic failure in youth with ADHD (Biederman et al., 2004) and because th...