Does national IQ depend on parasite infections? Er...

[I was originally going to avoid this, but decided to do it for the critical analysis, because I suspect it will be widely but badly covered, and because I also suspect that very little of this coverage will point out the publication record of these authors. Which is worth pointing out. Have fun in the comments!] Why do different countries have different IQs? You'd first answer probably has something to do with education, but a trio of US scientists have put forward a radically different hypothesis – international variation in intelligence is related to the prevalence of parasites in a country. As is, according to them, pretty much ever y major aspect of human culture (but more on this later)... Christopher Eppig, Corey Fincher and Randy Thornhill (yes, that one) from the University of New Mexico have suggested that fighting off parasitic infections during childhood takes up valuable energy that ...