Blondes are not dumb after all, researchers claimhttp://www.telegraph.co.uk/news/12201133/Blondes-are-not-dumb-after-all-researchers-claim.html
Blondes have an average IQ of 103.2, compared to 102.7 for those with brown hair, 101.2 for those with red hair and 100.5 for those with black hair