Crémieux Profile picture
May 21, 2023 10 tweets 4 min read Read on X
Changes to the Bar exam so far don't seem to have made a dent in the race differences in performance on it.

How large are these differences? In the latest year, 2022, the Black-White gap in California Bar pass rates was 0.97 SDs.

And this matters because we expect a threshold Image
to practice (the Bar exam) to reduce subsequent performance gaps.

But how much should those gaps be reduced?

Let's simulate to find out!

@_twolfram recently provided an estimate for British lawyers' IQs of 110.31: sciencedirect.com/science/articl….

Let's go ahead and assume
there's a threshold that's 0.67 SDs (10 points) above the higher-performing of two groups with equal variances who are separated by 0.97 d.

With simulated group sizes of one million persons each, the mean differences decline, and the SDs do too. The new gap is 0.412 d. Image
But we know that the 0.97 d gap is an underestimate due to range restriction.

Using MBE scores, it looks like the unrestricted gap should be more like 1.22 d. That leaves us with a 0.537 d gap above the threshold.

Do we have subsequent performance measures?

Yes! We have three:
- Complaints made against attorneys
- Probations
- Disbarments

For men, the gaps, in order, are 0.576, 0.513, and 0.564 d. For women, the gaps are 0.576, 0.286, and 0.286 d.

Men fit expectations and women apparently needed less discipline. Source: https://board.calba...
These gaps probably replicate nationally.

For example, here are Texas pass rates from 2004 - a 0.961 d Black-White first-pass gap. The 2006 update to these figures raised the gap to 0.969 d. Source: https://ble.texas.g...Image
Those figures are basically in line with LSAC's national study of Bar exam pass rates. Image
And those are basically in line with New York's gaps. Image
And this should probably be expected, since tests measure the same things. Image
Since all of the people included in these statistics went to ABA-accredited schools, they all had the opportunity to learn what was required to perform well on these tests.

But just like the Step examinations for medical doctors, the gaps on the tests and in real life remain.

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More from @cremieuxrecueil

Jan 13
American military veterans have a suicide problem.

Some have theorized the reason is deployment-related trauma.

Leveraging the random assignment of new soldiers to units with different deployment cycles, Bruhn et al. found that was wrong.

Deployment did not increase suicides. Image
Looking only at violent deployments (ones with peer casualties), there aren't noncombat mortality effects either.

What explains veteran suicide rates? Image
The reason seems to be that the proposition is wrong: veterans do not have increased suicide risk.

This may seem surprising, but it's not!

Their suicide rates are elevated over the general population because most of them are young White men. That group has a suicide issue. Image
Read 8 tweets
Jan 12
That aspect is probably not that unrealistic, unfortunately.

Across the OECD, on average, just 55% of 15-to-16-year-olds got this question right, and no country saw 80% get it.

Most people globally *do* struggle even reading simple tables. What else?

Thread.🧵 Image
That table-reading question is "Level 3", which, amazingly, corresponds to an already-high level of ability, by global standards.

This is a simpler Level 1 question, but with this, 92% of the OECD got it, including just 65% of Brazilians and 53% of Peruvians. Image
Level 2!

Just 77% of the OECD got this, with less than half of the Mexican population being up to the task.

In fact, only Asian countries got over 90% on this trivial question. Image
Read 9 tweets
Jan 10
Credit card rewards are a great way to redistribute billions of dollars from people who are bad with money to people who are good with it.

With the advent of rewards cards (red), there's lots of cross-subsidization of people with high credit scores by people with low scores. Image
Curiously, the degree of cross-subsidization is not just an income thing.

People with high incomes (green) and moderate incomes (yellow) take fewer rewards at low credit scores, although they take more at high credit scores. Image
What does this do demographically? Spatially?

Credit card rewards transfer money from uneducated to educated, poor to rich, Black to White, and rural to urban. Image
Read 5 tweets
Jan 7
The host of NPR's This American Life once tried to raise a pit bull with his now ex-wife.

He let the dog ruin his life🧵

He ended up getting it on Prozac and Valium, feeding it kangaroo and ostrich, and making excuses for the many times it would attack people.Image
Ira Glass' wife had a dog before they got married, but it died right before the ceremony.

That dog was a pit bull and it was a rescue, so they decided it would be good to rescue another one.

Per him, it originally came with the "slave name" Marley, which he changed to Piney. Image
Shortly after taking him home, Piney seemingly developed severe allergies to whatever he was eating.

So, Ira and his wife got him set up with a doctor. In fact, they got him set up with four doctors.

And they started spending more time cooking for the dog than for themselves. Image
Read 18 tweets
Jan 5
Pit bulls were bred to fight.

Animals in nature are not like that. Tigers and lions? They don't seek out combat. Nature doesn't seem to want to breed them into unrelenting killers.

This is why Britain banned the sport of "lion baiting"🧵 Image
The nature of "baiting" is torment.

The idea is to put large, powerful animals like bulls or lions in the ring with several dogs, and the winner lives.

The sport has existed for thousands of years. One of our first records is of Indians showing it to Alexander the Great. Image
The first record in England comes from 1610 and features King James I requesting the Master of the Beargarden—a bear training facility—to provide him with three dogs to fight a lion.

Two of the dogs died and the last escaped because the lion did not wish to fight and retreated. Image
Read 18 tweets
Jan 4
There are ZERO rich countries that haven't embraced markets. Image
You could say something like 'Ah, but this is just because the economic freedom index is constructed that way.'

No, it's not. We can all go and read how it's made. It's detailed every year. Failed excuse. Moreover, this has unintended predictive power:

fraserinstitute.org/sites/default/…Link: https://www.economist.com/graphic-detail/2022/09/29/a-study-of-lights-at-night-suggests-dictators-lie-about-economic-growth
You could say 'Ah, but this is about sanctions.'

That makes no sense.

For one, there's no supportive pattern of sanctions. For two, you can develop in near-autarky, and before post-WW2, that was comparatively what the most developed countries were dealing with. Link: https://ourworldindata.org/extreme-poverty-in-brief
Read 4 tweets

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