For the second section, we correlated the indices of discounting of delayed rewards with strength of NAcc connectivity using 122 participants who had performed a delay discounting task and had data considered systematic. The sample was comprised of typically developing children and children with ADHD (combined type, predominantly inattentive, or predominantly hyperactive type). We included all children (control children and all ADHD subtypes) in this analysis, as greater variation (more heterogeneity) in the delay-discounting indices is more appropriate for dimensional relationships (Hyman, 2007). See Table 1.B. Just as a note, 30 children with ADHD (all combined type) and 55 controls overlapped between sections 1 and 2.
