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Posts by David Epstein

It looks like the actual precision was only .48 (range .37 to .56).

2 weeks ago 0 0 0 0
Screenshot of an 1970s SNL commercial parody called "Placenta Helper," which famously never aired.

Screenshot of an 1970s SNL commercial parody called "Placenta Helper," which famously never aired.

So, don't look for the Helpers, is what I hear you saying?

3 weeks ago 1 0 1 0
A graph of approval/disapproval ratings for 47 as their shape widens over time like a sideways letter V (disapproval up from 41% to 62%, approval down from 47% to 36%).  They form a set of shark's teeth, inside the mouth of a shark in pursuit of him.  Header, above the shark: "Help him 'tank.'"

A graph of approval/disapproval ratings for 47 as their shape widens over time like a sideways letter V (disapproval up from 41% to 62%, approval down from 47% to 36%). They form a set of shark's teeth, inside the mouth of a shark in pursuit of him. Header, above the shark: "Help him 'tank.'"

Made my own sign for No Kings. No use of generative AI here. I did it the way the Amish would do it: Photoshop.

3 weeks ago 2 0 0 0

Sure, there are countless hypotheses about specific neural causes and manifestations of addiction—hypotheses with varying degrees of specificity and support. But any or all could be refuted without causing proponents of the BDMA to stop saying “addiction is a brain disease.” (2/2)

3 weeks ago 2 0 0 0

The brain-disease model of addiction (BDMA) isn’t a model at all. As best I can tell, the BDMA is “addiction is a brain disease.” That’s best described as a slogan or a credo. It makes no falsifiable predictions. (1/2)

3 weeks ago 1 0 1 0

I propose “de-muliebriate” (to reduce in muliebrity).

2 months ago 0 0 0 0

I've long enjoyed your wit in short-form posts, and here I really valued your openness. Thank you for it.

3 months ago 1 0 1 0

Something I posted in 2010:

"These days, when I see anti-Semitism, it’s like seeing a Swanson TV dinner with Salisbury steak, peas, and apple cobbler in a three-compartment foil tray. I’m like, ‘They still MAKE that stuff? It’s so boring.’”

I said "anti-Semitism," but I could have said "racism."

3 months ago 0 0 0 0
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Thank you for writing this paper.

4 months ago 0 0 1 0

He's right. 𝘛𝘩𝘦𝘳𝘦 𝘈𝘳𝘦 𝘔𝘰𝘯𝘴𝘵𝘦𝘳𝘴 (2013) deserves FAR more good attention.

It has all the things that make zombie movies potentially great, without the thing that makes them bad (they inevitably try to have fun with gun violence; this one doesn't, at least not yet, with 30 minutes to go).

5 months ago 1 1 0 0
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Ancestry-inclusive dog genomics challenges popular breed stereotypes Pairing owner surveys and genetics for pet dogs challenges behavioral breed stereotypes.

And really, not even the dogs.

www.science.org/doi/10.1126/...

5 months ago 4 0 1 0

Republican rhetoric all week was clearly aiming to either depress turnout or inspire visible maga pushback. Neither happened and the press doesn’t seem particularly interested in exploring the implications of that.

6 months ago 2557 505 21 27

That was me! Thank you, Ms. Davulis.

6 months ago 1 0 1 0
Side one of sign: Stephen King's "Misery" book cover Photoshopped to say "No Kings, Less Misery."

Side two of sign: Stephen King's "It" book cover Photoshopped to say "Kings Ain't It."

Side one of sign: Stephen King's "Misery" book cover Photoshopped to say "No Kings, Less Misery." Side two of sign: Stephen King's "It" book cover Photoshopped to say "Kings Ain't It."

Signs made for tomorrow.

Because every season is spooky season!

6 months ago 3 2 0 0

Most papers presenting psychological questionnaires don't specify whether respondents should see the title of the questionnaire. And papers rarely say whether respondents did see the titles.

Everybody who uses questionnaires: how do you handle titles when the questionnaire gives no guidance?

7 months ago 2 1 1 0
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Paper says: "...individuals with SUD exhibit marked deficits in liking. This may explain why patients with SUD experience a reduction in the ability to experience pleasure from natural rewards."

Nope. That is not what incentive-sensitization theory says, nor is it what SUDs usually entail.

7 months ago 1 0 1 0

Very anecdotally, I feel I've seen it, but I agree that it's not well established empirically.

8 months ago 4 0 1 0

Without having looked for it, we found evidence for what's sometimes called "aversive transmission": people who see the effects of addiction in their parents may sometimes make a point of avoiding risky substance-related behaviors. Humans do things that nonhumans don't do.

8 months ago 2 0 1 0
Text excerpts from "Latent Classes of Adverse Childhood Experiences (ACEs) and Adult Substance-use Problems and Psychosocial Outcomes: Complex and Heterogeneous Associations." (International Journal of Mental Health and Addiction)

Text excerpts from "Latent Classes of Adverse Childhood Experiences (ACEs) and Adult Substance-use Problems and Psychosocial Outcomes: Complex and Heterogeneous Associations." (International Journal of Mental Health and Addiction)

I’m proud of the way this paper turned out. We said:

--Stop revictimizing people. Don’t say, “You were sexually abused, so you’re more prone to iatrogenic addiction, so we won't prescribe opioids for your pain.”

--Monitor whole communities.

link.springer.com/article/10.1007/s11469-025-01527-w

8 months ago 8 2 1 0

When I see IRT used on psychological/psychiatric inventories, I question "difficulty." Low correct-response rates reflect difficulty if items measure knowledge or skill. But symptom/trait/state endorsement? Low "yes" rates may mean many things--not a construct called "difficulty." Change my mind.

9 months ago 2 0 0 0
Micro interventions based on real-time monitoring of affective instability: a proof-of- concept study.
Merlijn Olthof et al.

Excerpt 1 of 3:
Design: We used a quasi-randomized within-person experimental design for testing the micro-intervention effects during increased EWMSD [exponentially weighted moving standard deviation of affect ratings] vs. control periods (with EWMSD below the threshold). At the start of the study, participants were assigned at random to one of two phases: the experimental phase (micro-intervention is applied when there is increased EWMSD) and the control phase (micro-intervention is applied semi-randomly). 
[David’s comment: This is the appropriate control for Forer effects, and no one else ever uses it!]

Excerpt 2 of 3:
Interestingly, from the data viewing sessions, we also learned that there was a large heterogeneity in how persons experienced - and reacted to - the intervention and burst measurements. While some persons were really enthusiastic about the intervention, others found it annoying or confronting because they found that they had no time to engage in the intervention. Some persons never actually performed the activity they selected, some nearly always performed it in the next 30 minutes, but others used it as 'a reminder'…
[David’s comment: This is the kind of frankness we need more of.]

Excerpt 3 of 3: 
These results can inform future research, which, who knows, may at some point be able test the hypothesis that we were after.
[David’s comment: OK, marry me.]

Micro interventions based on real-time monitoring of affective instability: a proof-of- concept study. Merlijn Olthof et al. Excerpt 1 of 3: Design: We used a quasi-randomized within-person experimental design for testing the micro-intervention effects during increased EWMSD [exponentially weighted moving standard deviation of affect ratings] vs. control periods (with EWMSD below the threshold). At the start of the study, participants were assigned at random to one of two phases: the experimental phase (micro-intervention is applied when there is increased EWMSD) and the control phase (micro-intervention is applied semi-randomly). [David’s comment: This is the appropriate control for Forer effects, and no one else ever uses it!] Excerpt 2 of 3: Interestingly, from the data viewing sessions, we also learned that there was a large heterogeneity in how persons experienced - and reacted to - the intervention and burst measurements. While some persons were really enthusiastic about the intervention, others found it annoying or confronting because they found that they had no time to engage in the intervention. Some persons never actually performed the activity they selected, some nearly always performed it in the next 30 minutes, but others used it as 'a reminder'… [David’s comment: This is the kind of frankness we need more of.] Excerpt 3 of 3: These results can inform future research, which, who knows, may at some point be able test the hypothesis that we were after. [David’s comment: OK, marry me.]

Unsuccessful trial, good preprint. I fervently hope the final sentence makes it through peer review.

9 months ago 5 0 0 0

For me, the transformation of a grim industrial/parking space underneath I-83 into a venue for many dozens of local artists/craftspeople was...inspiring, lovely. It was also noisy (due in part to the nearby bandstand), but that was OK. I admired the act.

10 months ago 2 0 0 0
Tweets from June 8, 2020.

Payton Jones: “You may want to reconsider your use of trigger warnings. Our new paper, just appearing in Clinical Psychological Science, suggests they may do more harm than good.”

Me, in a series of five replies: “This is a nicely conducted experiment, but it's a very limited operationalization of the broad question it means to address— limited both by the stimuli used and the responses assessed….The "markedly distressing" cues (text from Dosteovsky, Ballard, etc.) were tame indeed. I don't see anything in the Results to indicate that they even markedly bothered anyone! So, not a very stringent test of whether trigger warnings help or harm. Re responses assessed: If nothing else, use of TWs conveys courtesy and respect. Presentation of highly disturbing material without TWs can convey an indifference or erasure that might be inherently distressing to people with trauma histories.  Your study didn't assess that aspect of people's responses to your stimuli and TWs--a major omission in any consideration of TWs' cost:benefit or risk:benefit ratio. (But, again, you would have needed nastier stimuli to assess this.)  In sum: an interesting demonstration and a very worthy endeavor, but I wouldn't use it to conclude that if I plan to show graphic films of sexual assault to a roomful of survivors, the best thing I can do for them is omit a warning. This study won't generalize to that.”

Tweets from June 8, 2020. Payton Jones: “You may want to reconsider your use of trigger warnings. Our new paper, just appearing in Clinical Psychological Science, suggests they may do more harm than good.” Me, in a series of five replies: “This is a nicely conducted experiment, but it's a very limited operationalization of the broad question it means to address— limited both by the stimuli used and the responses assessed….The "markedly distressing" cues (text from Dosteovsky, Ballard, etc.) were tame indeed. I don't see anything in the Results to indicate that they even markedly bothered anyone! So, not a very stringent test of whether trigger warnings help or harm. Re responses assessed: If nothing else, use of TWs conveys courtesy and respect. Presentation of highly disturbing material without TWs can convey an indifference or erasure that might be inherently distressing to people with trauma histories. Your study didn't assess that aspect of people's responses to your stimuli and TWs--a major omission in any consideration of TWs' cost:benefit or risk:benefit ratio. (But, again, you would have needed nastier stimuli to assess this.) In sum: an interesting demonstration and a very worthy endeavor, but I wouldn't use it to conclude that if I plan to show graphic films of sexual assault to a roomful of survivors, the best thing I can do for them is omit a warning. This study won't generalize to that.”

Pinker's assertion about trigger warnings (that they "can do more harm than good") is based on research that doesn't generalize to the intended situations, as I told the author five years ago.

10 months ago 99 6 2 0

I've been telling people how the use of full labeling on an ordinal response scale can clarify what you get from a survey/EMA item. I didn't mean this.

10 months ago 4 0 1 0
Side one of sign, from an old issue of the Onion's "American Voices" feature: "Phrases like 'massive redistribution of wealth' have historically brought rivers of blood. That said, it's time for a massive redistribution of wealth."

Side two of sign:  "Austerity? You go first, E.M.  I'll join in if it looks good."

Side one of sign, from an old issue of the Onion's "American Voices" feature: "Phrases like 'massive redistribution of wealth' have historically brought rivers of blood. That said, it's time for a massive redistribution of wealth." Side two of sign: "Austerity? You go first, E.M. I'll join in if it looks good."

New weekend of Tesla Takedown protests, new two-sided sign.

(I'm reading 𝘍𝘶𝘯𝘯𝘺 𝘉𝘦𝘤𝘢𝘶𝘴𝘦 𝘐𝘵'𝘴 𝘛𝘳𝘶𝘦, Christine Wenc's excellent book about the history of The Onion.)

11 months ago 4 1 0 0
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Graph of Tesla stock freefalling: "You can't keep a good man down.  But THIS schmuck?  You can."

Graph of Tesla stock freefalling: "You can't keep a good man down. But THIS schmuck? You can."

New sign made for tomorrow's Tesla Takedown. As a scientist, I've had it drummed into me--you're always supposed to show data.

11 months ago 5 0 0 0

Just looked at a questionnaire that has: "I feel blue"; "I feel downhearted"; "I feel sad"; "I feel gloomy"; "I feel depressed"; "I feel low." Plus: "I am quick tempered"; "I have a fiery temper"; "I am a hot-headed person"; "I fly off the handle."

"Dear participant: I don’t respect your time."

1 year ago 2 0 1 0

Barnum/Forer effect by proxy: That's when researchers think a published scale measures their construct of interest because the scale has exactly the right title (plus the usual reliability metrics and validity claims). The items on the scale are weird and repetitious, but only respondents see it.

1 year ago 0 0 1 0

Correction: Woodlawn, not Catonsville.

1 year ago 2 0 0 0
Side one of sign: "Let's get a little more juice in that third rail."

Side two of sign: "Uncap FICA."

Side one of sign: "Let's get a little more juice in that third rail." Side two of sign: "Uncap FICA."

My two-sided sign for today's "Hands Off" protest outside the Social Security Administration building in Catonsville, MD.

The Baltimore Banner put the crowd at "over 300," but I think it was 𝘰𝘷𝘦𝘳 over that. And Catonsville is but a suburb.

1 year ago 14 2 1 0