The TD children had lower ADHD severity and better neuropsychological functioning (Table 1). There were several significant inverse correlations between NEPSY domains and ADHD symptoms and impairment (Table 2). Family SES was associated with ADHD severity and NEPSY scores at most time points in expected directions (r-range: .01 to .28; p-range .86 to <.001). Finally, there were several significant correlations between the same constructs over time (e.g., ADHD severity was associated over time; r ranging from .41 to .82; all p<.001).
