TGGP,

Sorry, forgot to answer your additional question in my reply. Whenever Thomas Sowell and Walter Williams get together in a small group (as they do occasionally), within that small geographical region darker skin color is a great indicator of higher intelligence. Makes all these divisions seem just a little more arbitrary, doesn't it?

On a more serious note, Queens, NYC, NY has a higher than normal proportion of black West Indies immigrants. In that geographic region, blacks have an average IQ higher than those with lighter skin. Other US locations include Pembroke Pines, Florida, Rialto, California and Brockton, Massachusetts. They also have a higher median income, are more likely to live in a two parent household, own their own home, etc...