The motor associations appeared to be driven by IL-16 in the ADHD group for both duration and microevent measures (R2 0.55/0.47, F(3,17) = 6.9/5.0, p = 0.003/0.01: β +0.55/+0.47, p = 0.007/0.028, respectively). This evidence concerns the gene IL16 and attention deficit-hyperactivity disorder.