Moreover, the variation in recognition of child and adolescent vignettes describing few and many symptoms of MDD also differed from that of ADHD, χ2 (1) = 4.09, p < .05, GAD, χ2 (1) = 4.07, p < .05, and CD, χ2 (1) = 4.10, p < .05. This evidence concerns the gene GAD1 and attention deficit-hyperactivity disorder.