Thus, their ability in the performance of thinking, planning, communication, and behavior is more limited than in Whites. Professor Coon also found that this area of the Black brain is thinner and less grooved on the outer surface than in that of a White person, and that the development of this part of the brain ceases at an earlier age in the Black, thus limiting further intellectual advancement. Nor is Dr. Coon alone in his conclusions. Even more important than brain size are differences in brain shape, fissuration, the number of pyramidal neurons, and supra-grandular layer thickness. It has long been known that the depth of fissuration is related to superior intelligence, and the brains of Whites have deeper fissures in the frontal and occipital regions.
Black infants mature faster than White infants.
Their motor skills develop earlier, along with their mental alertness, but they later start falling behind, so that by the age of five, Whites have not only caught up, but have developed a 15 point I.Q. advantage. By age six, the larger brain size of young Whites is clearly evident. However, such studies are very much discouraged today and there would be a frenzied effort to suppress them if they did take place. The findings of Professor Audrey Shuey, in a monumental compendium of 50 years of I.Q. tests entitled, The Testing of Negro Intelligence , are that the Black, on the average, scores 15 to 20 points lower than Whites. This research has recently been confirmed by the bestseller, The Bell Curve .