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Culture War Roundup for the week of November 27, 2023

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The Dunning-Kruger effect is autocorrelation

Huh. I can only apologize for the relatively bare link, but I feel like it's worth drawing attention to something so widely accepted yet utterly worthless, especially when it comes up so often here.

The thing about the DK effect is that it makes intuitive sense. To extend it past the realm of typical human intelligence, an ant or a chimp isn't very good at knowing how dumb they are because they're not very good at most things. However, I suspect that the average dumb (human) person does know they're a bit dim, so it confuses me how this finding can even arise.

The problem with the Dunning-Kruger chart is that it violates a fundamental principle in statistics. If you’re going to correlate two sets of data, they must be measured independently. In the Dunning-Kruger chart, this principle gets violated. The chart mixes test score into both axes, giving rise to autocorrelation.

Realizing this mistake, Edward Nuhfer and colleagues asked an interesting question: what happens to the Dunning-Kruger effect if it is measured in a way that is statistically valid? According to Nuhfer’s evidence, the answer is that the effect disappears.

Is it possible to salvage a non-trivial version of the DKE? The one we know and once loved literally works for random data, so that's right out. In other words, what's the cut-off where a stupid person becomes smart enough to know they're stupid, or at least worse than their peers?*

*In a more general sense than a chimp knowing he's not as strong or big as the alpha male.

Is it possible to salvage a non-trivial version of the DKE?

Sure, a great example is to look at people who hear of the DKE once on Reddit, and never shut up about how they see it everywhere.

I suspect that the average dumb (human) person does know they're a bit dim, so it confuses me how this finding can even arise.

I think something we don't think about enough is how dumb people use heuristics to help them navigate a world where they are vaguely-aware that they don't have the intellectual horsepower to participate.

My wife and I argued for a whole drive to Philly about a tweet she saw that went something like: If you're more intelligent than your partner and better at arguing logically, winning every argument with them by arguing logically is abusive. She thought it was retarded, I said that while the use of the term "abusive" was rather florid, the point has some validity. Picture a couple, one a well-educated motte-ian wordcel able to deconstruct and reconstruct a logical argument about anything at any time, the other a nice and well intentioned imbecile who can't string two sentences together. If they agree on logical argument as the way to settle things, the motte-izen will win every time, and the imbecile will never get what he wants, even if the imbecile happens to be right. One side getting what they want every time is bad for the relationship in the long term, even if the imbecile agrees that they lost the argument, they will notice not getting what they wanted later, and they will resent it. They may resent it incoherently, unable to logically explain why the outcome is unjust, but they will resent it nonetheless. This will be deleterious to the relationship.

The idiot moves through life thinking that salesmen are evil, because he knows that a good salesman can talk him into something he'll regret, it's happened before. I will never forget a waitress at my parents' favorite restaurant, telling them about how she needed a new car, and she went to the dealer intending to buy a used Jeep Liberty (a bad car, but a small and economical one) and wound up getting talked into buying a brand new Jeep Commander (a $50k seven passenger monstrosity that FCA's CEO would later call "not fit for human consumption" and state should never have been sold). She had no kids, she had no outdoor hobbies, she had zero need for a seven passenger SUV, but she got talked into it. On a seven year loan at a crazy interest rate.

The dimwit chooses tribalism, because the black skin good white skin bad is an easy meme to keep track of. He'll only benefit modestly, if at all, by his tribal champions being elevated, but it's easier than figuring out actual policy questions, and it avoids the salesman problem again.

The moron assumes that everyone is out to get him, because he has precious little ability to defend himself if they are. Everyone has an angle, he intones sagely, because he has been fooled so many times. Paranoia is adaptive, like a skittish rabbit.

As evidence for what you’ve said:

Study: Smarter People Are More Trusting

The researchers posit that intelligent people might be better at correctly evaluating whether people are trustworthy, or whether a particular person is likely to act untrustworthily in a particular situation.

Is there a good name for this concept of “dumb people heuristics”? Or are you aware of other studies that develop it further?