We utilized **data** from an ongoing longitudinal study of behavioral, neuropsychological, social, and family functioning in 228 girls, 140 with rigorously diagnosed childhood ADHD and 88 matched comparison girls. All participated in summer research programs and extensive testing during childhood (baseline: ages 6-12), and they were followed prospectively into adolescence, completing extensive evaluation again 5 years later (see Hinshaw 2002;Hinshaw et al. 2006).