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Dean Eckles

@eckles.bsky.social

networks, contagion, causality faculty at MIT

9,467 Followers  |  1,270 Following  |  323 Posts  |  Joined: 06.07.2023  |  2.2803

Latest posts by eckles.bsky.social on Bluesky

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Research Intern - Computational Social Science | Microsoft Careers Research Interns put inquiry and theory into practice. Alongside fellow doctoral candidates and some of the world's best researchers, Research Interns learn, collaborate, and network for life. Researc...

Want to be an intern at Microsoft Research in the Computational Social Science group in NYC (Jake Hofman, David Rothschild, Dan Goldstein)

Follow this link and do your thing! Deadline approaching soonish!

apply.careers.microsoft.com/careers/job/...

05.12.2025 23:35 β€” πŸ‘ 34    πŸ” 34    πŸ’¬ 2    πŸ“Œ 2

Do these models allow for any decreases?

05.12.2025 20:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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The perplexing β€œconnected cluster axiom” – Inverse Complexity Lab Research group on inverse problems in complex systems and network science.

I wrote a blog post about the often stated but never explained assumption that communities in graphs should always be connected.

This is inconsistent with statistical significance and null models that underlie the most widely employed methods.

skewed.de/lab/posts/co...

04.12.2025 21:10 β€” πŸ‘ 44    πŸ” 15    πŸ’¬ 3    πŸ“Œ 0

I can see this resonating with my colleagues who have been doing sophisticated conjoint experiments for decades...

05.12.2025 14:56 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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We should probably be placing incarcerated people in prisons closest to their homes.

Why?

Assigning individuals to prisons closer to their home reduces recidivism.

Really?

Yep. Being placed close to one's home increases social contacts that appear to reduce reoffending.

04.12.2025 13:46 β€” πŸ‘ 91    πŸ” 30    πŸ’¬ 4    πŸ“Œ 1
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🚨 New in Nature+Science!🚨
AI chatbots can shift voter attitudes on candidates & policies, often by 10+pp
πŸ”ΉExps in US Canada Poland & UK
πŸ”ΉMore β€œfacts”→more persuasion (not psych tricks)
πŸ”ΉIncreasing persuasiveness reduces "fact" accuracy
πŸ”ΉRight-leaning bots=more inaccurate

04.12.2025 20:42 β€” πŸ‘ 114    πŸ” 56    πŸ’¬ 2    πŸ“Œ 3

They’re killing people as a twitter joke. It’s depraved. Can’t let yourself lose the capacity to be appalled and disgusted and outraged by this.

05.12.2025 02:28 β€” πŸ‘ 13588    πŸ” 4213    πŸ’¬ 440    πŸ“Œ 174

helps to think about the details like any regular crime you'd see on one of the 800 cop shows that run on TV constantly: these guys committed one set of murders, thought it over, and then decided to kill the witnesses as part of the coverup. mention of drugs is just jingling keys at this point

05.12.2025 03:14 β€” πŸ‘ 2232    πŸ” 527    πŸ’¬ 19    πŸ“Œ 7

A blog post giving a more thorough take on survey experiments and the credibility revolution: cyrussamii.com?p=4168

03.12.2025 17:23 β€” πŸ‘ 79    πŸ” 36    πŸ’¬ 6    πŸ“Œ 7
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What if every family stops having children as soon as they have a boy? Would the sex ratio end up skewed one way or the other?

This is what it would look like for 25 random families following that rule (with a normal male/female sex ratio of 105/100.)

/1

02.12.2025 03:15 β€” πŸ‘ 37    πŸ” 8    πŸ’¬ 5    πŸ“Œ 2

You’re absolutely right β€” you are Pagliacci. It would certainly be difficult for you to attend your own performance! I should not have given such paradoxical advice, and I apologize deeply for the error. There is no excuse for my failure.

03.12.2025 01:12 β€” πŸ‘ 471    πŸ” 132    πŸ’¬ 6    πŸ“Œ 1
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Haidt is "stunned" that ChatGPT asked how it would threaten youth reveals that its plan would be what Haidt has argued in his books. The secret plan!

There should be some way to rescind the doctorate of any commentator on digital media who interprets ChatGPT output like this. I am not joking.

02.12.2025 03:07 β€” πŸ‘ 516    πŸ” 95    πŸ’¬ 26    πŸ“Œ 34

This is amazing. If you haven't reveled in the glory that is the IPUMS international census archive, you should! Here's something I made from it: "The Rise of One-Person Households" journals.sagepub.com/doi/full/10....

01.12.2025 15:14 β€” πŸ‘ 28    πŸ” 5    πŸ’¬ 2    πŸ“Œ 1

I think they may not actually be statistically distinguishable. But not sure... Everything in the FBES papers is SD units so I'm not sure what the SE for affective polarization in points is.

01.12.2025 16:33 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 1
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We first note that hand-wringing about the decline in US college enrollments has mistakenly linked such declines to the price of four-year colleges.

But the decline is entirely driven by two-year community colleges (and by for-profit colleges). The four-year sector is the dog that didn't bark.

01.12.2025 13:34 β€” πŸ‘ 294    πŸ” 98    πŸ’¬ 10    πŸ“Œ 11

What would you do if your 2SLS estimates are much larger than OLS, but you still have confidence in the instrument? Any tools or techniques to further probe what's going on?

01.12.2025 09:45 β€” πŸ‘ 10    πŸ” 5    πŸ’¬ 4    πŸ“Œ 1

In that case you could try weightIng the OLS with the implicit TSLS weights. Or weight the TSLS with inverse complier scoring weights. So then if there is selection on observables etc, they should agree.

01.12.2025 11:23 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Today, social media platforms hold the sole power to study the effects of feed-ranking algorithms. We developed a platform-independent method that reranks participants’ feeds in real time and used this method to conduct a preregistered 10-day field experiment with 1256 participants on X during the 2024 US presidential campaign. Our experiment used a large language model to rerank posts that expressed antidemocratic attitudes and partisan animosity (AAPA). Decreasing or increasing AAPA exposure shifted out-party partisan animosity by more than 2 points on a 100-point feeling thermometer, with no detectable differences across party lines, providing causal evidence that exposure to AAPA content alters affective polarization. This work establishes a method to study feed algorithms without requiring platform cooperation, enabling independent evaluation of ranking interventions in naturalistic settings.

Today, social media platforms hold the sole power to study the effects of feed-ranking algorithms. We developed a platform-independent method that reranks participants’ feeds in real time and used this method to conduct a preregistered 10-day field experiment with 1256 participants on X during the 2024 US presidential campaign. Our experiment used a large language model to rerank posts that expressed antidemocratic attitudes and partisan animosity (AAPA). Decreasing or increasing AAPA exposure shifted out-party partisan animosity by more than 2 points on a 100-point feeling thermometer, with no detectable differences across party lines, providing causal evidence that exposure to AAPA content alters affective polarization. This work establishes a method to study feed algorithms without requiring platform cooperation, enabling independent evaluation of ranking interventions in naturalistic settings.

New paper in Science:

In a platform-independent field experiment, we show that reranking content expressing antidemocratic attitudes and partisan animosity in social media feeds alters affective polarization.

🧡

01.12.2025 07:59 β€” πŸ‘ 144    πŸ” 64    πŸ’¬ 3    πŸ“Œ 3
Does svyglm use robust standard errors? - Biased and Inefficient

For the avoidance of doubt: does svyglm() use robust standard errors? Yes!
notstatschat.rbind.io/2025/12/01/d...

01.12.2025 07:20 β€” πŸ‘ 34    πŸ” 9    πŸ’¬ 2    πŸ“Œ 0
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Zillow Removes Climate Risk Scores From Home Listings

You can still find property level climate risk scores on Redfin

Zillow Removes Climate Risk Scores From Home Listings
www.nytimes.com/2025/11/30/c...

30.11.2025 12:24 β€” πŸ‘ 143    πŸ” 56    πŸ’¬ 6    πŸ“Œ 7

I think it computes SEs in a way that is justified by the design, but which also turns out to largely coincide with robust SEs

29.11.2025 23:50 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

They’re burying the weirdest part of this story, which is that this congressman’s twin brother keeps trying and failing to replace him in various jobs and is now hoping to replace him in this one

29.11.2025 23:03 β€” πŸ‘ 1747    πŸ” 438    πŸ’¬ 65    πŸ“Œ 34
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Politics Is Seeping Into Our Daily Life and Ruining Everything Is there anything that politics can't ruin? The answer, it appears, is a resounding "no" as partisan conflict creeps into…

Makes me think of the "oil spill" model of polarization, and broader discussion by @jdtuccille.bsky.social here
reason.com/2021/02/17/p...

28.11.2025 13:26 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Does S.F. have the β€˜infrastructure’ to support Lurie’s housing plan? Let’s consider Housing opponents love to say we lack β€œthe infrastructure” to accommodate new neighbors our otherwise inclusive communities. What are they talking about?

The β€œwe can’t possibly build more homes because our infrastructure isn’t perfect” argument is ubiquitous in San Francisco housing debates.

It’s effectively saying β€œsorry, no home for you until all infrastructure is perfect β€” go live 100 miles away.”

The argument is also factually baseless:

29.11.2025 16:08 β€” πŸ‘ 157    πŸ” 25    πŸ’¬ 2    πŸ“Œ 6

The surprising crab-trap–pulling behavior is described in this article: onlinelibrary.wiley.com/doi/10.1002/...

We recently published a paper on how animal tool use is conceptualized, offering a framework to make sense of its different forms πŸ‘‡πŸ“ƒ www.cambridge.org/core/journal... #evosky #philsci

27.11.2025 17:17 β€” πŸ‘ 30    πŸ” 13    πŸ’¬ 0    πŸ“Œ 3
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We shouldn’t be too quick to see inconsistent beliefs as evidence of irrationality.

Cool research by @bayesandbounds.bsky.social & @tanialombrozo.bsky.social suggests inaccessibility of an apparently conflicting belief can lead to (temporary, quickly resolved) inconsistency:

buff.ly/QncPtjq

29.11.2025 16:09 β€” πŸ‘ 7    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
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Forecasting Social Science: Evidence from 100 Projects Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...

"Confidence in the accuracy of one's forecasts is perversely associated with lower accuracy."

www.nber.org/papers/w34493

28.11.2025 18:29 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 2    πŸ“Œ 0
Satellite image of a commercial development along a stroad. On the left there's a big box store that says "Property taxes: $102,485, Parcel Size: 17,766 meter square. On the right there's two apartment buildings that read "Property taxes: $626,002, Parcel Size: 10,930 meter square"

Satellite image of a commercial development along a stroad. On the left there's a big box store that says "Property taxes: $102,485, Parcel Size: 17,766 meter square. On the right there's two apartment buildings that read "Property taxes: $626,002, Parcel Size: 10,930 meter square"

Minimum parking requirements create financially insolvent land use patterns.

The two apartment buildings on the right generate six times more in property taxes than the big box store on the left, while occupying almost half the space!

#BlackFridayParking

28.11.2025 21:07 β€” πŸ‘ 112    πŸ” 45    πŸ’¬ 1    πŸ“Œ 4

Pete Hegseth is Secretary of Defense *because* he championed war criminals. Literal war criminals convicted of heinous offenses in US courts martial. Got Trump to pardon some in term 1.

Not in spite of, because.

That's what Trump appointed, and what 50 GOP Senators (plus Vance) voted to confirm.

28.11.2025 18:34 β€” πŸ‘ 403    πŸ” 127    πŸ’¬ 14    πŸ“Œ 1
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Politics Is Seeping Into Our Daily Life and Ruining Everything Is there anything that politics can't ruin? The answer, it appears, is a resounding "no" as partisan conflict creeps into…

Makes me think of the "oil spill" model of polarization, and broader discussion by @jdtuccille.bsky.social here
reason.com/2021/02/17/p...

28.11.2025 13:26 β€” πŸ‘ 2    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

@eckles is following 20 prominent accounts