"In this study, we use a large-scale incentivized experiment with nearly 1,300 participants to show that the gender gap in spatial abilities, measured by time to solve a puzzle, disappears when we move from a patrilineal society to an adjoining matrilineal society."
It is presently a commonplace of Western culture that women are worse at spatial reasoning than men, and this is commonly attributed to intrinsic biological differences.
It turns out this may be highly questionable. A study in PNAS studied two nearby tribes in northeast India, one with a strongly patriarchal organisation, one with a strongly matriarchal organisation. Both share the same agrarian diet and lifestyle and DNA tests indicate they are closely related.
In the patriarchal society, women did noticeably worse on spatial reasoning. In the matriarchal society, women and men did about the same.
The authors carefully do not overstate their results, claiming only that they demonstrated that culture influences spatial performance "in the task that we study." However, this promisingly suggests quite a bit of room for improvement of measurable aspects of intelligence may be feasible with proper attention to culture and nurture.
What measurable aspects of intelligence do you attribute to genetic causes? Can you test it this well? How would you fix it and help people be all they can be?
News coverage: ArsTechnica.
None of the reporting I've seen claims that the men with their own children are giving their resources to their sisters. But I haven't read the research article itself, which is behind a paywall, so I'm open to correction. Does the article say that married men are giving their resources to their sisters (rather than to their wives)? If not, your objection is irrelevant.
In general, your appeal to "folk anecdote" and sociobiology can at best show that such societies should be rare. To show that none at all exist is to incur a heavier burden of evidence than you have borne.
Evolutionary psychology (EP) predicts that men who are exclusively homosexual are rare. And indeed they are. But EP is not falsified by the existence of a minority of men who are exclusively homosexual, because EP does not place a fatally large amount of probability mass on there being no exclusively homosexual men. Similarly, even if EP (plus induction from folk anecdote) predicted that societies are overwhelmingly likely to be set up along the lines that you describe, that would not suffice to make it extremely unlikely for a few societies to deviate far from your description.
(I'm afraid that your focus on the untrustworthiness of tenured scholars makes no sense to me. If anything, it is the untenured scholars, whether inside or outside academia, whose job security depends on pandering to their audience.)
On a tangential note, it is my impression (admittedly based on relatively little evidence and perhaps biased) that getting tenure nowadays involves severe enough scrutiny that it really is extremely hard for anyone who harbors disreputable beliefs to get through the process, even if he tries to hide them. I can think of some... (read more)