based largely on chance – they were polymorphisms discovered early with preliminary data suggesting that they altered function in candidate genes thought to be of interest for relevant behavioral phenotypes. It is certainly not our intention to argue that these genes are not of potential relevance, rather, we argue that with everything we now know about genetics, focusing only on these genes, and only on these widely studied polymorphisms within these genes, does not take advantage of the progress that has occurred in the field of genetics.
