This has been another episode of “what Cosma said”:http://cscs.umich.edu/~crshalizi/weblog/546.html

In my first post about this, I said that there were two possible interpretations of Saletan’s actions: that he didn’t know that the ideas he was spread were crap, or that he did, but spread them anyway to advance an agenda. Saying that the second interpretation was more charitable wasn’t _just_ a joke. Sadly, this partial _mea culpa_ supports the first interpretation, that of incompetence. To put it in “shorter William Saletan” form, what he is saying is: I am shocked — shocked! — to discover that the people who devote their careers to providing supposedly-scientific backing for racist ideas are, in fact, flaming racists. And he does seem to be shocked, though it is hard (as Yglesias says) to see why, _logically,_ he should strain out those gnats he displays for our horrified inspection while swallowing the camel of group inferiority (and telling his readers that camel is really great and the coming thing). This indicates a level of incompetence as a reporter and researcher that is really quite stunning …

But let me back up a minute to the bit about relying on “peer review and rebuttals to expose any relevant issue”. There are two problems here. One has to do with the fact that, as I said, it is really very easy to find the rebuttals showing that Rushton’s papers, in particular, are a tragic waste of precious trees and disk-space. For example, in the very same issue of the very same journal as the paper by Rushton and Jensen which was one of Saletan’s main sources, Richard Nisbett, one of the more important psychologists of our time, takes his turn banging his head against this particular wall. Or, again, if Saletan had been at all curious about the issue of head sizes, which seems to have impressed him so much, it would have taken about five minutes with Google Scholar to find a demonstration that this is crap. So I really have no idea what Saletan means when he claimed he relied on published rebuttals — did he think they would just crawl into his lap and sit there, meowing to be read? If I had to guess, I’d say that the most likely explanation of Saletan’s writings is that he spent a few minutes with a search engine looking for hits on racial differences in intelligence, took the first few blogs and papers he found that way as The Emerging Scientific Consensus, and then stopped. But detailed inquiry into just _how_ he managed to screw up so badly seems unprofitable.