"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.
On the big issues, race differences, gender differences, sexual preferences, anti communism and islamophobia, the official truth held by the tenured is complex, subtle, and nuanced. They are both permitted and forbidden to acknowledge statistical differences between groups, permitted to acknowledge these differences in some ways and some circumstances and not in other ways and other circumstances, permitted to make deductions from statistical differences to particular cases in some ways and some circumstances and not in other ways and other circumstances, permitted to acknowledge and forbidden to admit various topics
Thus a high IQ tenured individual with a deep knowledge of what is acceptable can steer quite close to the truth on these topics, though the closer he gets, the cleverer and more knowledgeable he has to be, and and on the margins, barely permitted truth has sometimes rather suddenly become forbidden truth, causing some tenured academics to abruptly recant of previously uncontroversial peer reviewed publications.
On the big issues, official truth tends to be sophisticated and subtle: It is on the minor and obscure issues that the official truth tends to be simplistic, rigid, and absurd, and it is on these obscure issues, not the big issues, where one will see O'Brien hold up four fingers and every high IQ person with tenure swears he is holding up five fingers because the party declares it to be so..