Crémieux Profile picture
Aug 16, 2025 23 tweets 9 min read Read on X
One concept I wish more people were aware of is the Tocqueville Effect.

Named for Alexis de Tocqueville, this concept describes the curious phenomenon by which people become more frustrated as problems are resolved:

As life gets better, people think it's getting worse!🧵 Image
You go to a supermarket and it's time to get some fruit.

Of course, when you go to pick your bananas and your berries, you want to pick the freshest stuff.

But if what's on display is a little less fresh than ideal, you might consider a speckled banana or squishier grapes OK. Image
This is natural and fine.

You know what's not fine?

Cops beatinging jaywalkers because the crime rate dropped.

With too few "assaults", more mild crimes might start getting treated like assaults, even if they shouldn't. Image
Freshness and assault can both be examples of the Tocqueville effect, or as it's been called in the scientific literature: prevalence-induced concept change.

If you need a real-world example, consider the concept of "microaggressions": with less racism, people have to invent it.Image
Incredibly, we see this experimentally

In this first trial, participants were asked to rank a series of 1000 dots that varied from very blue to very purple on a continuum, with a stable prevalence of each color throughout

Results for the first and last 200 trials were identical Image
In this second trial, the researchers changed it up.

Now, the prevalence of blue dots would be decreased as the trial went on.

Notice what happened? People started seeing dots which they would've previously identified as purple as being blue instead. Image
This is, frankly, amazing.

If you just shift the prevalence of something, people start identifying marginal things as it more often—objectively, literally in terms of what they classify the things they see with their eyes!

And this holds up in a fairly broad way.
Researchers repeated this with different designs

In one, they prompted differently. In another, they asked people to stay consistent and paid for success. They changed the speed of color change, reversed the direction of the change...

Replicated each time!
But are we sure this applies to abstract concepts?

Yes!

In another trial, with photographs of people independently rated as more or less threatening displayed at stable prevalences, we get this: Image
When the experiment was redone with a decreasing prevalence of threatening faces, the result held up remarkably well from the previous color experiment.

That is to say, participants started rating the same faces as more threatening. Image
Rinse, repeat—Tocqueville evidently identified something very real a few hundred years ago.

And this works with even more complex concepts.

In this trial, participants played the role of reviewers on Institutional Review Boards, rating the ethicality of proposed studies.Image
Reduce the prevalence of study ethicality (rated by outside raters until they agreed) and...

Bam! Same thing as before!

People start rating ethically neutral proposals are being unethical! Image
When I explained this to a friend, I told them that the most interesting thing about this was that there were individual differences in how much the effect appeared.

Some people could see prevalence change a bunch and be unaffected. Others shifted strongly. Keep that in mind!
Now, I think you should be able to tell why I think this concept is so important and so neglected.

It is applicable to thinking about a huge number of issues.

Take lead abatement. Blood lead levels keep falling, race differences are almost gone, and funders care more than ever! Image
Or take literacy.

We're at historical highs for literacy rates, so why should we be throwing more and more money, effort, and urgency at the tiny residual of people who are illiterate?

Or consider police shootings. They're way down, but public interest is way up. Image
Think about billionaires.

They're increasingly likely to be self-made men, but as a society, we've become increasingly likely to be worried about their unearned privileges and whatnot, when the truth is, we've been moving away from that at a breakneck pace. Image
Human trafficking?

Slavery?

Racism?

These are all ills that have virtually vanished, but public outcry is pitched and tempers are flared, and even saying that we've basically beaten these issues (though problems remain!) is treated as denialism when it's just a fact!
So much makes sense in light of the Tocqueville Effect.

As problems get smaller, the attention given to them must grow.

This is a personal problem for many, too. Have you ever noticed that activists refuse to claim victory? Many get stuck crusading for life. Image
Imagine you're some HR bureaucrat tasked with fixing a problem at your company

If you manage it, you make the office a more hospitable place and you'll naturally start looking at smaller issues as evidence you're still needed, thanks to this effect—self-justification not needed!
Frankly, I think this is a source of a huge amount of modern pessimism.

Perhaps if people realized they were falling prey to this, that would help them to cheer up. Who knows?

I'll leave you with some words from Chris Rock: Image
P.P.S.

Lots of people have independently come up with the Tocqueville Effect in various forms.

Consider "Simon's Rule": Image
P.P.P.S.

Bodybuilder obsessing over that last little bit of fat on their sculpted stomach?

You guessed it: body dysmorphia as Tocqueville Effect! Image

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More from @cremieuxrecueil

Apr 23
I simulated 100,000 people to show how often people are "thrice-exceptional": Smart, stable, and exceptionally hard-working.

I've highlighted these people in red in this chart: Image
If you reorient the chart to a bird's eye view, it looks like this: Image
In short, there are not many people who are thrice-exceptional, in the sense of being at least +2 standard deviations in conscientiousness, emotional stability (i.e., inverse neuroticism), and intelligence.

To replicate this, use 42 as the seed and assume linearity and normality
Read 7 tweets
Apr 21
British fertility abruptly fell after one important court case: the Bradlaugh-Besant trial🧵

You can see its impact very visibly on this chart: Image
The trial involved Annie Besant (left) and Charles Bradlaugh (right).

These two were atheists—a scandalous position at the time!—and they wanted to promote free-thinking about practically everything that upset the puritanical society of their time. Image
They were on trial because they tried to sell a book entitled Fruits of Philosophy.

This was an American guide to tons of different aspects of family planning, and included birth control methods, some of which worked, others which did not.Image
Read 14 tweets
Apr 17
One of the really interesting studies on the psychiatric effects of maltreatment is Danese and Widom's from Nat. Hum. Behavior a few years ago.

They found that only subjective (S), rather than objective (O) maltreatment predicted actually having a mental disorder.Image
Phrased differently, if people subjectively believed they were abused, that predicted poor mental health, but objectively recorded maltreatment only predicted it if there was also a subjective report.

Some people might 'simply' be more resilient than others.
I think this finding makes sense.

Consider the level of agreement between prospective (P-R) and retrospective (R-P) reports of childhood maltreatment.

A slim majority of people recorded being mistreated later report that they were mistreated when asked to recall. Image
Read 6 tweets
Apr 15
Nature finally published it!

The Reich Lab article on genetic selection in Europe over the last 10,000 years is finally online, and it includes such interesting results as:

- Intelligence has increased
- People got lighter
- Mental disorders became less common

And more!Image
They've added some interesting simulation results that show that these changes are unlikely to have happened without directional selection, under a variety of different model assumptions. Image
They also showed that, despite pigmentation being oligogenic, selection on it was polygenic.

"[S]election for pigmentation had an equal impact on all variants in proportion to effect size." Image
Read 9 tweets
Apr 10
I still think this is one of the most important recent papers on AI in the job market🧵

The website Freelancer added an option to generate cover letters with AI, and suddenly the quality associated with cover letters stopped predicting the odds of people getting hired!Image
LLMs do a few things to cover letters.

Firstly, they increase the quality, as measured by how well tailored they are to a given job listing. Image
Second, they make job applications in expensive, so people start spending less time shooting off applications.

More, rapidly-produced job applications becomes the norm. Image
Read 8 tweets
Apr 6
The authors of this work now have a newer study with a nine-times larger sample!🧵

The overall result is that the rich are:

- More risk-tolerant, open to experiences, extraverted, and conscientious
- Less neurotic
- No more agreeable than normal, non-rich people Image
Now, we have a breakdown of different types of rich people!

Among those who could be classified, the majority of the rich (79%; >=€1m net worth) were self-made, with a smaller, 21% share whose wealth came primarily from inheritances. Image
How do inheritors and the self-made differ in personality?

They're both more risk-tolerant and less neurotic than the average, but the inheritor profile looks like a mixture between the overall rich and normal people, with more agreeableness, less openness, etc. Image
Read 8 tweets

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