In case anyone cares,
here's the study in question, which is checking a evolutionary-psyhcological hypothesis with secondary data (which has all the problems associated with such studies, as definition mismatch between the data collection and interpretation, etc.).
So, Ruv, you seem to talk about individual smarts and experiential novelty (cf. the section entitled "Savanna-IQ interaction hypothesis"). The paper basically argues that monogamy for males (but not females) is an evolutionary novelty, and thus men need "general intelligence" to cope with it (which is also an evolutionary novelty: see "Evolution of General Intelligence"), while women don't. Monogamy is experientally familiar, that is it's the cultural default, but smarter people are better at it. Monogamy is an elitist boys club.
Since the study in question does not conduct any experiments itself, we're all free to interpret the numbers in our own way. But to do so, we should go to the source and look at the theories that went into data collection. If we're to evaluate
this study, we should really do so, too.
I haven't even finished reading this study yet. I'm tired, not a psychologist, not familiar with evolutionary psychology at all, skeptical of the basic concept of "universals", and finally I'm skeptical of IQ test results and their applicability (as, for example, real-life situation provide different motivations to do well than IQ tests). So reading it properly is rather hard for me. Especially when I'm tired, as I'm now.