🐙Ben. Alfred Profile picture
Jan 6 4 tweets 2 min read Read on X
Is 'mansplaining' actually necessary?
It may well be, as women know much less than men in almost every domain. This is especially true for finance, the general factor of knowing about things, and science-related knowledge.

Evidently, men are not mansplaining enough: Image
You may be wondering "what's going on with factor 4?", and so did I. However, it ceases to be mysterious once you realize that factor 4 does not load at all on the second order general factor, and was also uncorrelated with factors 1 through 3. And look at the subtest loadings!Image
Despite being labeled 'humanities,' it is primarily defined by moderate negative loadings on Sport and Games, effectively indexing the absence of male-coded knowledge rather than humanities expertise. The former test is also the only one whose largest absolute loading was on F4.
Worth saying that a >1d difference in general knowledge is larger than typical for these studies; it is normally around half a standard deviation. Image

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More from @Ben_Alfred_

Jan 8
On the individual level, higher intelligence has a protective effect against fatal car accidents, but does the same hold true when comparing populations?

It appears yes: national IQ correlates at r = -0.7 with country-level road-traffic death rates. Image
MENA nations only: Image
European nations only: Image
Read 9 tweets
Sep 4, 2025
🪡🧵@jensenjeans recently used more data to refine national IQ estimates.
Here are the revised averages with 95% confidence intervals: Image
Subsaharan-Africa (continental and islands): Image
Europe: Image
Read 8 tweets
Jul 9, 2025
This is not controlling for IQ. In a meta-analysis they found the openness–income association was largely, but not entirely, mediated by IQ.

Independent of intelligence, conscientiousness and extraversion are the strongest predictors of income: Image
The confidence intervals for the adjusted effect sizes are inferred. Here is the table from the paper: Image
Read 4 tweets
Jun 29, 2025
if this makes you happy you’re part of the problem. Image
tbf ‘the problem’ is chiefly genetic, so it’d be more apt to say that if this (in the context of us living in a dysgenic hellscape) doesn’t remind you of how sick and degenerate civilisation is now, your sexual disgust response has been mutated out of you
admittedly, her being an autistic pervert is endearing until you consider the implications of her disposition.
Read 4 tweets
Jun 27, 2025
Values are heritable.🧵
The belief that ethics and values differ (both within and between populations) because of parenting, 'culture', or school indoctrination is widespread.
That genetics account for much of this variation, less so.

1. Moral beliefs aren't equally heritable: Image
Some of this is due to some moral questions being more emotionally charged than others; how you feel about abortion is more genetic than how you feel about capitalism.

2. Visceral convictions (intuitive beliefs) tend to be more genetic regardless of the question being asked: Image
3. What decisions you reach during moral reasoning, such as considering and answering dilemmas, are also quite heritable. This means that what seems like reasoning is just you prompting yourself into revealing genetic intuitions you already have:Image
Read 12 tweets
Jun 21, 2025
🧵on why these intuitions are wrong.

the association between ses and general honesty is entirely mediated by iq. independent of genetic intelligence, ses has zero predictive power.

surprisingly, being black still predicts dishonesty even in models that take iq into account: Image
a swedish study found that iq still predicts violent offending rates between siblings, and controlling for ses variables in half brothers reared apart did not decrease the effect size.

so to ‘lessen crime’ you can’t just eliminate poverty — you need to increase intelligence. Image
the association between wealth and overall criminality is also entirely attributable to confounders. graph by @cremieuxrecueil: Image
Read 6 tweets

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