A study examined 160 children and ranked their central nervous system functioning on a scale of 1 to 3, with 1 being normal functioning. For children ranked 1, 70% had no diagnosis of fetal alcohol spectrum disorder, while that percentage decreased significantly as the CNS ranking increased, with all children ranked 15-19 receiving a diagnosis. The document questions how children with a CNS ranking of 1 could merit a diagnosis of fetal alcohol spectrum disorder.