Thousands of studies have shown that brain size shape and function are under heavy genetic control. Not only that, but recent studies have shown that numerous genes have undergone significant selection pressure in just the last 5-10 thousand years, including ones that affect the brain. We are still evolving. Why do people deny race, which is simply continental genetic clusters? Or that different races have brains that have evolved different size shape and function? Surely it would be unlikely that brains would be the only organ to evolve exactly the same all over the world? Once differences in brain structure and function are accepted to some degree then it is much easier to explain the disparities in social functioning between the races. I'm sure I will be called a racist for this but Occam's Razor demands that simple and factually confirmed reasoning be fully examined. I will be more than happy to bring citations to refute any logically argued differences of opinion.