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For anyone interested in additional research and debate on this topic, I'd recommend watching Pinker and Spelke's excellent debate on Youtube. As some might remember, in 2005 Larry Summers was fired from Harvard for making similar comments regarding right tail cognitive abilities. Pinker/Spelke lay out great points on both sides of the issue.

Sex Differences in Cognitive Abilities by Diane Halpern is another important work in this subject. It was published back in 1986, so the research on topic has been going on for decades. During that time, virtually every piece of research supports the claim that innate differences in mental abilities exist between the sexes. The extent of those differences is hard to measure, but this new paper is nothing new. It's just adding more support to an already large body of evidence.