A DRD4 x maternal sensitivity interaction effect was found on the ADHD subscale in the European-only sample (B = -0.94, SE = 0.38, p = .023) and in the total sample (B = -0.58, SE = 0.19, p = .002, which would survive Bonferonni correction for 8 multiple comparisons). The gene discussed is DRD4; the disease is attention deficit-hyperactivity disorder.