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Jesper Asring Hansen

@jesperasring

Associate professor @AalborgUni. Public administration and policing. https://sites.google.com/view/jesperasring

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21.09.2023
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Latest posts by Jesper Asring Hansen @jesperasring

The only thing popularists fear more than an unpopular idea from the left is a popular one that might actually threaten billionaires.

07.03.2026 03:52 πŸ‘ 166 πŸ” 30 πŸ’¬ 1 πŸ“Œ 0
Representative Alexandria Ocasio-Cortez speaks with reporters. (AP / Bill Clark/CQ Roll Call)

Representative Alexandria Ocasio-Cortez speaks with reporters. (AP / Bill Clark/CQ Roll Call)

AOC: β€œThat’s one reason he must be removed from office - if the Epstein files have such a hold on Trump & this admin that they are willing to plunge us & risk world war in order to save themselves politically - that is the definition of someone who cant make objective decisions for the American ppl”

05.03.2026 15:13 πŸ‘ 9501 πŸ” 2593 πŸ’¬ 196 πŸ“Œ 98
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Russia, Venezuela, Iran, China, the Sahel region, the United States ...

Want to know why state agents carry out brutal repression β€” or participate in illegal coups?

Our new book "Making a Career in Dictatorship" provides answers β€” it just got published by @academic.oup.com:

tinyurl.com/ystwm3tf

16.02.2026 11:09 πŸ‘ 138 πŸ” 75 πŸ’¬ 13 πŸ“Œ 11

πŸ”₯Revised paperπŸ”₯

More regressions. More tests of mechanisms. Same story. Tldr:

Brexit caused much regulatory uncertainty at a moment when UK state capacity was v weak, and hard-to-regulate companies (aka oil firms) did not think twice and generated a mess in the high seas.

Now with full receipts ⬇️

20.02.2026 16:06 πŸ‘ 38 πŸ” 13 πŸ’¬ 3 πŸ“Œ 0

I am extremely honored, and equally perplexed, that my book has received the Stein Rokkan Prize.

Thank you so much to everyone who helped out with this project along the way. So much of the book is the result of feedback by kind people who took the time to listen and read. Thank you.

20.02.2026 10:21 πŸ‘ 314 πŸ” 26 πŸ’¬ 23 πŸ“Œ 5

Wild how economists and political scientists worry so much about unbiased tests **in their papers** and yet basically ignore how their journals filter on significance. Given our noisy tests, the latter creates huge bias away from zero.

10.09.2025 15:00 πŸ‘ 22 πŸ” 5 πŸ’¬ 1 πŸ“Œ 1
We Need to Tax Billionaires -- Gabriel Zucman

We Need to Tax Billionaires -- Gabriel Zucman

In bookstores in the UK on May 21

Very much looking forward to this

13.02.2026 10:50 πŸ‘ 267 πŸ” 82 πŸ’¬ 7 πŸ“Œ 20

Very glad that our first DEMNORM paper found such a great home at @thejop.bsky.social. If you’re interested in the role of social desirability in online surveys, check out the thread and paper below ⬇️

13.02.2026 08:32 πŸ‘ 23 πŸ” 7 πŸ’¬ 1 πŸ“Œ 0
Analyzing the impact of events through surveys: formalizing biases and introducing the dual randomized survey design | Political Science Research and Methods | Cambridge Core Analyzing the impact of events through surveys: formalizing biases and introducing the dual randomized survey design

Congratulations to our faculty member Andrew Bertoli, whose paper on analyzing the impact of events through surveys has just come out in @psrm.bsky.social! πŸŽ‰ πŸŽ‰πŸŽ‰

www.cambridge.org/core/journal...

12.02.2026 15:44 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
It must be very hard to publish null results
Publication practices in the social sciences act as a filter that favors statistically significant results over null findings. While the problem of selection on significance (SoS) is well-known in theory, it has been difficult to measure its scope empirically, and it has been challenging to determine how selection varies across contexts. In this article, we use large language models to extract granular and validated data on about 100,000 articles published in over 150 political science journals from 2010 to 2024. We show that fewer than 2% of articles that rely on statistical methods report null-only findings in their abstracts, while over 90% of papers highlight significant results. To put these findings in perspective, we develop and calibrate a simple model of publication bias. Across a range of plausible assumptions, we find that statistically significant results are estimated to be one to two orders of magnitude more likely to enter the published record than null results. Leveraging metadata extracted from individual articles, we show that the pattern of strong SoS holds across subfields, journals, methods, and time periods. However, a few factors such as pre-registration and randomized experiments correlate with greater acceptance of null results. We conclude by discussing implications for the field and the potential of our new dataset for investigating other questions about political science.

It must be very hard to publish null results Publication practices in the social sciences act as a filter that favors statistically significant results over null findings. While the problem of selection on significance (SoS) is well-known in theory, it has been difficult to measure its scope empirically, and it has been challenging to determine how selection varies across contexts. In this article, we use large language models to extract granular and validated data on about 100,000 articles published in over 150 political science journals from 2010 to 2024. We show that fewer than 2% of articles that rely on statistical methods report null-only findings in their abstracts, while over 90% of papers highlight significant results. To put these findings in perspective, we develop and calibrate a simple model of publication bias. Across a range of plausible assumptions, we find that statistically significant results are estimated to be one to two orders of magnitude more likely to enter the published record than null results. Leveraging metadata extracted from individual articles, we show that the pattern of strong SoS holds across subfields, journals, methods, and time periods. However, a few factors such as pre-registration and randomized experiments correlate with greater acceptance of null results. We conclude by discussing implications for the field and the potential of our new dataset for investigating other questions about political science.

I have a new paper. We look at ~all stats articles in political science post-2010 & show that 94% have abstracts that claim to reject a null. Only 2% present only null results. This is hard to explain unless the research process has a filter that only lets rejections through.

11.02.2026 17:00 πŸ‘ 644 πŸ” 223 πŸ’¬ 30 πŸ“Œ 51
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Nice to see it all dressed up!

Our paper on politicians' wages, corruption and criminal violence is out in the February issue of AEJ:Policy. Check it out at:

www.aeaweb.org/articles?id=...

02.02.2026 14:35 πŸ‘ 7 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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For absolutely no reason, let me remind people of this banger of a paper by @caroartc.bsky.social

doi.org/10.1016/j.jp...

30.01.2026 10:22 πŸ‘ 175 πŸ” 54 πŸ’¬ 11 πŸ“Œ 4
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The threat of analytic flexibility in using large language models to simulate human data: A call to attention Social scientists are now using large language models to create "silicon samples" - synthetic datasets intended to stand in for human respondents, aimed at revolutionising human subjects research. How...

Can large language models stand in for human participants?
Many social scientists seem to think so, and are already using "silicon samples" in research.

One problem: depending on the analytic decisions made, you can basically get these samples to show any effect you want.

THREAD 🧡

18.09.2025 07:56 πŸ‘ 339 πŸ” 157 πŸ’¬ 12 πŸ“Œ 59
Cultural Roots of Prejudice: Cultural Scripts and the Reactivation of Antisemitism in Germany | Perspectives on Politics | Cambridge Core Cultural Roots of Prejudice: Cultural Scripts and the Reactivation of Antisemitism in Germany

Why did antisemitism rise in Germany during the Covid pandemic? And why was this increase concentrated among political centrists, rather than on the fringes?

doi.org/10.1017/S153...

@kanol.bsky.social @wzb.bsky.social @uni-hamburg.de @politikuhh.bsky.social @socfub.bsky.social

27.01.2026 10:57 πŸ‘ 57 πŸ” 25 πŸ’¬ 1 πŸ“Œ 2
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Reminder that, as of the latest reports, Liam Ramos is still in prison in Texas - now for 5 days.

His parents are legal asylum seekers with no criminal record.

27.01.2026 00:30 πŸ‘ 24621 πŸ” 11089 πŸ’¬ 691 πŸ“Œ 576
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Two three-year postdocs in quasi- or survey-experimental social science. The Department of Society and Politics at Aalborg University (Faculty of Social Sciences) is recruiting two full-time postdoctoral researchers to work on the...

I'm hiring two three-year postdocs and an RA for my project on how police presence affects perceived safety.

I'm looking for candidates who can contribute to the theoretical development and who have strong expertise in causal inference.

Deadline: March 1.

www.stillinger.aau.dk/videnskabeli...

22.01.2026 12:21 πŸ‘ 12 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0

I love this project. It's very smart and has very important implications. Do make sure to read it if you haven't already:

21.01.2026 09:49 πŸ‘ 14 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
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πŸ“„ New WP version out: revised text, tightened argument, and new analysis.

The Politics of Evidence Selection (w/ @jesperasring.bsky.social)

Grateful for the helpful comments and presentation opportunities. Further feedback welcome!

πŸ”— osf.io/preprints/so...

20.01.2026 16:01 πŸ‘ 42 πŸ” 14 πŸ’¬ 1 πŸ“Œ 2
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Knowing too much to see fascism ? By Daniel Ziblatt

open.substack.com/pub/ziblatt4...

19.01.2026 02:42 πŸ‘ 53 πŸ” 18 πŸ’¬ 2 πŸ“Œ 11
Screenshot of a data visualization titled β€œThe Cost of American Exceptionalism,” subtitled β€œWhat would change if the U.S. matched the OECD average?” The page explains that each card shows how outcomes would change if the U.S. matched the average of 31 peer democracies. Below, a section labeled β€œEconomy & Inequality” displays eight cards comparing U.S. figures to OECD averages. Highlights include: +$19K per household per year in redistributed income and +$96K in redistributed wealth if the top 1% matched OECD shares; a 71% lower CEO-to-worker pay ratio (from 354Γ— to 101Γ—); 50 million more workers with union coverage; 26 million more people with health insurance; $2.1 trillion saved annually in healthcare spending; $691 less per person per year in prescription drug costs; and intergenerational economic mobility being twice as high. Each card shows the U.S. value alongside the OECD average.

Screenshot of a data visualization titled β€œThe Cost of American Exceptionalism,” subtitled β€œWhat would change if the U.S. matched the OECD average?” The page explains that each card shows how outcomes would change if the U.S. matched the average of 31 peer democracies. Below, a section labeled β€œEconomy & Inequality” displays eight cards comparing U.S. figures to OECD averages. Highlights include: +$19K per household per year in redistributed income and +$96K in redistributed wealth if the top 1% matched OECD shares; a 71% lower CEO-to-worker pay ratio (from 354Γ— to 101Γ—); 50 million more workers with union coverage; 26 million more people with health insurance; $2.1 trillion saved annually in healthcare spending; $691 less per person per year in prescription drug costs; and intergenerational economic mobility being twice as high. Each card shows the U.S. value alongside the OECD average.

If there's one empirical insight I'd want everyone to understand about American politics, it's this:

America's problems are solved problems. Just not here.

What would change if the US simply matched the average of 31 peer democracies? Not Denmark or Norway. Just the middle of the pack. 🧡

12.01.2026 21:36 πŸ‘ 5324 πŸ” 2363 πŸ’¬ 66 πŸ“Œ 226
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Embracing Impeachment The case against Trump and his cabinet keeps growingβ€”and the argument for waiting is no longer convincing.

We just had a week that changed everything, including my view of impeachment. Before: Wait until 2027. Now: Embrace it in 2026 and hold hearing-like forums to spotlight the many articles of impeachment filed against Trump and his cabinet. My latest @thebulwark.com www.thebulwark.com/p/embracing-...

12.01.2026 13:45 πŸ‘ 1824 πŸ” 495 πŸ’¬ 65 πŸ“Œ 42

I think this is really bad. And wrong. The point is, more or less, that if Trump doesn't do exactly as Hitler (and for some reason not Mussolini, the "founder" of fascism) then he cannot be a fascist.

The main points where Trump differs is 1) that he does not like war and prefer small operations.

08.01.2026 12:28 πŸ‘ 38 πŸ” 9 πŸ’¬ 8 πŸ“Œ 0

No matter how you slice it, US police officers are safer on the job and paid waaaaay more than other countries' police despite doing a…less than stellar job

The question isn't more police vs. less police. It's why are US police paid so much while doing such little and such poor police work?

17.12.2025 16:52 πŸ‘ 450 πŸ” 125 πŸ’¬ 13 πŸ“Œ 4

A new PNAS paper finds that polarization increased immediately after the release of Lady Gaga’s β€œJust Dance” and the advent of the late-2000s electro-pop era, which both appeared around the same year, 2008.

15.12.2025 08:21 πŸ‘ 196 πŸ” 37 πŸ’¬ 12 πŸ“Œ 3
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Can speed cameras make streets safer? Quasi-experimental evidence from New York City | PNAS Each year, approximately 40,000 people die in vehicle collisions in the United States, generating $340 billion in economic costs. To make roads saf...

Our new study provides rare causal evidence about NYC’s speed camera program. We find large reductions in collisions (30%) and injuries (16%) near intersections with cameras. www.pnas.org/doi/abs/10.1... @astagoff.bsky.social ky.social @brendenbeck.bsky.social nbeck.bsky.social πŸ§ͺ

08.12.2025 20:08 πŸ‘ 509 πŸ” 182 πŸ’¬ 9 πŸ“Œ 33
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New paper alert!

"Public Speakers With Nonnative Accents Garner Less Engagement" -- now out in Psych Science!

This is my first graduate student's first first-author paper (and it was her first-year project).

Short THREAD on the results:

04.12.2025 16:59 πŸ‘ 53 πŸ” 23 πŸ’¬ 3 πŸ“Œ 3
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Political communication research overwhelmingly relies on text. But parliamentary speech is multimodal! In our new @psrm.bsky.social article, Mathias Rask and I show that legislators also signal partisan conflict nonverballyβ€” through changes in vocal pitch during floor speeches. 🧡 1/11 #polisky

04.12.2025 15:19 πŸ‘ 85 πŸ” 24 πŸ’¬ 3 πŸ“Œ 1
"Captain Gains" on Capitol Hill
Shang-Jin Wei & Yifan Zhou
WORKING PAPER 34524
DOI 10.3386/w34524
ISSUE DATE November 2025
Using transaction-level data on US congressional stock trades, we find that lawmakers who later ascend to leadership positions perform similarly to matched peers beforehand but outperform them by 47 percentage points annually after ascension. Leaders' superior performance arises through two mechanisms. The political influence channel is reflected in higher returns when their party controls the chamber, sales of stocks preceding regulatory actions, and purchase of stocks whose firms receiving more government contracts and favorable party support on bills. The corporate access channel is reflected in stock trades that predict subsequent corporate news and greater returns on donor-owned or home-state firms.

"Captain Gains" on Capitol Hill Shang-Jin Wei & Yifan Zhou WORKING PAPER 34524 DOI 10.3386/w34524 ISSUE DATE November 2025 Using transaction-level data on US congressional stock trades, we find that lawmakers who later ascend to leadership positions perform similarly to matched peers beforehand but outperform them by 47 percentage points annually after ascension. Leaders' superior performance arises through two mechanisms. The political influence channel is reflected in higher returns when their party controls the chamber, sales of stocks preceding regulatory actions, and purchase of stocks whose firms receiving more government contracts and favorable party support on bills. The corporate access channel is reflected in stock trades that predict subsequent corporate news and greater returns on donor-owned or home-state firms.

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Figure 2: Estimated dynamic quasi-difference-in-differences coefficient, di, of equation(3), with vertical dashed lines representing 90 percent confidence intervals. The point estimate of the year in which the lawmaker became a congressional leader (Year 0) is normalized to zero. BHAR over the 250 days following each trade is the dependent variable and calculated using the Fama-French five-factor plus momentum as the benchmark model.

什 1 1 -9 -8 -7 -6 -5 -4 -3 -2 -1 1 2 3 4 5 7 8 9 Year Figure 2: Estimated dynamic quasi-difference-in-differences coefficient, di, of equation(3), with vertical dashed lines representing 90 percent confidence intervals. The point estimate of the year in which the lawmaker became a congressional leader (Year 0) is normalized to zero. BHAR over the 250 days following each trade is the dependent variable and calculated using the Fama-French five-factor plus momentum as the benchmark model.

After becoming a congressional leader, a politician’s stock portfolio beats out those of peers by 47 (!!!) percentage points a year through trades timed around bills and firms that later get government contracts

www.nber.org/papers/w34524

via @florianederer.bsky.social

03.12.2025 01:42 πŸ‘ 1434 πŸ” 629 πŸ’¬ 32 πŸ“Œ 83
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Legislators talk less about the future as they age | The Journal of Politics: Vol 0, No ja

NEW ARTICLE: @palesl.bsky.social, Vesa Koskimaa and I have an letter out in JOP, "Politicians talk less about the future as they age" doi.org/10.1086/739406 (1/10)

21.11.2025 12:53 πŸ‘ 69 πŸ” 24 πŸ’¬ 3 πŸ“Œ 3