Executive functioning is thought to be centralized in the frontal lobes. Individuals with frontal lobe damage do, in fact, show deficits often seen in ASD, which is where the theory of executive dysfunction in ASD came from. Indeed, there are reported structural abnormalities in the frontal cortices of ASD individuals, but results are inconclusive because results vary by individual. Generally, delayed postnatal maturation of the prefrontal cortex has been reported. However, it is important to keep in mind that developmental and acquired disorders are inherently different and cannot be compared totally equally. Similarly, results are inconclusive about how much of ASD symptoms are related to prefrontal cortex abnormalities. Though there is a potential that these abnormalities are probably a factor, it is unclear if these abnormalities are the root of ASD.