IQ

Tag archives for IQ

Imagine that there is a trait observed among people that seems to occur more frequently in some families and not others. One might suspect that the trait is inherited genetically. Imagine researchers looking for the genetic underpinning of this trait and at first, not finding it. What might you conclude? It could be reasonable to…

Elizabeth Chin has written an excellent scholarly takedown, in the form of a “letter from your thesis reader,” of Jason Richwine’s 2009 Harvard PhD dissertation, ” IQ and Immigration.” I’ve not read Richwine’s thesis, though I probably will at some point. And you probably haven’t either. But, you’ll still find Chin’s post informative and compelling.…

The presumption being examined here is that humans are divisible into different groups (races would be one term for those groups) that are genetically distinct from one another in a way that causes those groups to have group level differences in average intelligence, as measured by IQ. More exactly, this post is about the sequence…

Well, yes. But the question raises some interesting points.

This is Chart 1 from Race, Evolutoin and Behavior by J. Philippe Rushton, originally published in the Unabridged Edition of same.

Why Human Brains Vary

Many people assume human brains vary genetically and genetic variation maps to races. But the races are not real and genetic variation can’t explain brain differences. Because, dear reader, brains don’t work that way. Let’s look just at the brain part of this problem.

This post started out as a comment that would have gone here (but would have done just as well here). But it became sufficiently long and possibly interesting that I figured it would make a good, if somewhat rough, blog post.

Who is smarter, men or women? Any college teacher (at least in the social sciences and life sciences) who has ever paid attention to their own stats know that women do better than men in college classes. OK, women are smarter. But why? There are all kinds of post hoc explanations given for this like…

Yet Another Gene for Intelligence

Obviously, I have to work this both into tonight’s talk in Grand Rapids, and blog about it: Gene governs IQ boost from breastfeeding from PhysOrg.com The known association between breast feeding and slightly higher IQ in children has been shown to relate to a particular gene in the babies, according to a report this week…