In an article reviewing Flynn's new book "Are We Getting Smarter?", the author basically made it an article of faith that race, gender, and even nations have no difference in IQ based in genetics.

Despite its flaws, there is a deeper, almost humanitarian, purpose driving Are We Getting Smarter? It urges us—researcher and layperson alike—to take the veiled bigotry of absolute genetic differences among races, genders, and nations off the table.

http://www.tnr.com/book/review/are-we-getting-smarter-rising-IQs-james-flynn#