I am a African-American. I have the answer as to whether or not there  differences in intelligence.  The answer is no.  It can be proven that given the right  learning and social  environments that we can compete and excel as well as anybody.  Were that not true white folks in this country would not historically been so adamant against us learning their ways.  Remember this insanity once was spread when it came to sports ha,(reply>), I'm sorry. I'm sure you are an intelligent and very nice person. But there is a difference in intelligence between different groups of people. Thats just an objective scientific fact. Don't take it personally. Learn from it