"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.
Well that is what people with tenure tell us.
Sociobiology suggests that a male will support his own offspring twice as much as he will support his nieces and nephews, and four times as much as he will support his half sister's children, thus the alleged observation is surprising.
Folk anecdote is that the flow of support is pretty much proportional to paternal certainty. In those societies with low paternal certainty, for which we have observations that are not filtered through tenured observers, women and children support adult males, not the other way around.
If a man is supporting his sister, which is to say his sister's children, rather than his own, this suggests an environment of low paternal certainty. In an environment of low paternal certainty, there is also a high probability that a sister is in fact a half sister, reducing the male propensity to support women and children to insignificant levels, resulting in the observed behavior that in such societies, successful men predate on women and children, and unsuccessful men are ignored by women and men alike - observed, that is by poor ignorant racist people, whose observations are apt to be curiously different from those of highly intelligent tenured people.
It seems that common folk observe people acting as biology predicts, and the tenured folk observe something different.
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 t... (read more)