In relation to parenting and ADHD, the literature also suggests a role for the high-activity monoamineoxidaseA (MAOA) genotype, i.e., negative parenting predicted inattention symptoms only among boys with high-activity MAOA [27]; and for the low-activity serotonintransporter (5-HTTLPR) genotype, i.e., family conflict predicted inattention symptoms only in those with low-activity 5-HTTLPR [28]. The gene discussed is MAOA; the disease is attention deficit-hyperactivity disorder.