At VDARE.com, I have an in-depth review of Bryan Caplan's new book Selfish Reasons to Have More Kids.
Caplan has written a delightful book, breezy in prose style, but reasonably rigorous in its handling of the nature-nurture statistics. I hope people who like Selfish Reasons to Have More Kids do have more kids. And I hope people who put it down immediately to see what the Kardashians are up to on reality TV have fewer kids.
I think you'll find it interesting.