In this, the second of two opposing commentaries, Stephen Ceci and Wendy M. Williams argue that such research is both morally defensible and important for the pursuit of truth. In the first, Steven Rose argues that studies investigating possible links between race, gender and intelligence do no good.
The ensuing online debate is as polarized as you might expect. Read James Flynn's comment, which utterly demolishes Steven Rose.
Flynn: ...In Rose’s original paper [commentary], he asserts that the trait in question (intelligence) leaves aside other desirable traits and argues that the groups in question can be divided into subgroups that are more biologically coherent. He concludes that the hypothesis is not subject to scientific treatment; and therefore, no useful social policy will emerge. In his response to Ceci and Williams, he says something very different, namely, that by about 1975, it had been definitively shown that genes had no place in explaining group differences. So from that date, Jensen and everybody else had no excuse to persist.
To assert both that a hypothesis is not scientifically testable and that it has been conclusively falsified is incoherent. The only way to reconcile them is to assume that Rose does not really mean Jensen had been refuted by 1975, but is saying that by that date, it should have been clear to everyone that the question was indeed unanswerable.
I predict most readers will find about half the remarks in the debate incredibly stupid. But which half? :-)
Incidentally, one of the commentary authors and I were both on the faculty at Yale at the same time and I have known her for many years.
My Darwin 200 post is here, but see also this ;-)