Joris Frese

🇪🇺🇦🇫 Published Today in CPS 🇪🇺🇦🇫 “Stand by those who share our values” – how refugees fleeing the Taliban improved European attitudes toward immigration Article: journals.sagepub.com/doi/10.1177/... Pre-print: osf.io/preprints/os... Thread: 1/8

Our large-scale study of phone bans just came out in Science. We randomized phone-free classrooms for 16,000+ students across 10 institutions in Odisha, India. Students deposited phones in a box at the start of each class, for a full semester.

Now out --> New approach to measure public misperceptions by combining inaccuracy and confidence. Results: most inaccurate survey responses on immigration perceptions are uninformed guesses, genuine misperceptions are concentrated among anti-immigration respondents www.cambridge.org/core/journal...

🚨new working paper🚨 Chris Blair (@chriswblair.bsky.social), Jeremy Weinstein, and I describe here The Dataset of World Refugee and Asylum Policies, in which we code de jure asylum policy for 205 countries, from 1951-2022. We hope you will find the paper and data helpful. osf.io/preprints/so...

How much of a risk are LLM-generated bots for online behavioral experiments? We present results of an entirely natural language prompt-generated agent, capable of absolving any of the 26 experiments we tested it on. Most tasks are passed with data that can pass as human osf.io/preprints/ps... (1/)

1/ Very proud of this preprint — and especially because it marks a first step for our lab in a new direction: using what we know about learning not only to diagnose misconceptions, but also to correct them. zenodo.org/records/2303...

New from Hainmueller and Laitin on the causal effects of becoming a citizen on wages. Short story: the observational ests overstate the premium relative to the experimental ests. Authors conclude "observational averages should not be used as causal forecasts for policy" doi.org/10.1073/pnas...

Today, @malojan.bsky.social and I are launching the PartySOME website at partysome.org, an open, interactive platform for exploring how much political parties communicate online and what they talk about 🎤💻📊

Announcing Round 1 of the 𝐌𝐚𝐩𝐩𝐢𝐧𝐠 𝐏𝐨𝐥𝐢𝐭𝐢𝐜𝐢𝐚𝐧𝐬 𝐚𝐧𝐝 𝐏𝐚𝐫𝐭𝐢𝐞𝐬 𝐨𝐧 𝐓𝐢𝐤𝐓𝐨𝐤 (𝐌𝐏𝐏𝐓𝐢𝐤𝐓𝐨𝐤) dataset! It provides manually collected TikTok handles for MPs and parties in 17 Western democracies (elected as of December 2025). Dataset: dataverse.harvard.edu/dataverse/mp... Preprint: doi.org/10.31235/osf... 1/3

📄 New paper in @electoralstudies.bsky.social: “From the center to the fringes: A comparative test of attitudinal explanations for mainstream-to-challenger defection” 👥 with @krausewe.bsky.social and @aigneranna.bsky.social 🔗 doi.org/10.1016/j.el...

Over the past two years, I4R partnered with Psychological Science (@psychscience.bsky.social) on a large reproducibility project. 67 independent teams reproduced 64 articles published in 2024–2025, about 44% of eligible papers. Paper: www.econstor.eu/bitstream/10... Here's what we learned 🧵

Call for Proposals: EPSS Copenhagen 2027 Pre-Conference Workshops! We're seeking proposals for workshops on 23 June 2027, at the University of Copenhagen. Whether you are a senior scholar or an ECR, we want your expertise! ⏳Deadline: 13 Nov 2026 🔗Apply here: epssnet.org/2027-copenha... #EPSS2027

New paper: In Nov 2025, X began showing where accounts actually operate from. We studied 8,200 politically engaged accounts claiming to be in the US half were revealed to be elsewhere What happened when the mismatch went public? @yuweichuai.bsky.social @thomasrenault.bsky.social @dgrand.bsky.social

📄 New working paper w. Alex De Juan, @felixhaass.bsky.social & Henry Thomson: We study Weimar Germany in 1932 to ask whether far right electoral success pacifies extremist movements - or can fuel violence when mandates do not translate into power. osf.io/preprints/so...

Extremely impressive field experiment by @nmalhotra.bsky.social et al. had few effects on election attitudes among conservatives in TX despite being "exposed to an average of 20 online videos, 18.5 cable TV videos, 23.9 display ads, 3 text messages, and 3 postcards" www.science.org/doi/full/10....

How do refugee crises end? In Dec. 2024, Syrian dictator Assad fled to Russia, ending a regime that displaced millions Would Syrians go back now the regime fell? Our paper tests this with original panel data (2019-2026), ~3k Syrian refugees, spanning fall of Assad osf.io/preprints/so... 🧵 1/8

Interesting new research on the effects and content of Instagram Reels and podcasts ceciliaysui.com/files/Influe... preprints.apsanet.org/engage/api-g... link.springer.com/epdf/10.1007...

In 2023, @nature.com published 'Papers and patents are becoming less disruptive over time', receiving world-wide media attention. Our Matters Arising, published after a 32 month delay (more on that soon), shows that the reported decline can largely be attributed to dataset artefacts. 🧵

🔥🔥🔥 noahdasanaike.github.io/sage.html

what is the longest time between submission and publication in an academic journal?

Our new website is now live at www.replicationresearch.org - See what is currently under review, learn more about who we are, customize article appearance, and view lay summaries, viewership stats, etc. for each article. Read more at www.replicationresearch.org/announcement....

Replicate everything? Interested in thoughts on this idea: shiny2.wzb.eu/ipi/replicate/ At @wzb.bsky.social we've been developing a protocol for replication files for empirical papers to: ✅be readable by machines ✅keep humans in the loop

In this oa contribution to Humanities and Social Sciences Communications, Jale Tosun, Nils Schütz, Elisabeth Maikranz and I show that the programmatic gap between churches and Christian Democratic parties in Germany on the issue of migration has widened over the years. rdcu.be/ft6wy /1

Should immigrants be allowed to vote? This is a highly politically charged question. In a new research paper and substack piece, me and @tarekjaziri.bsky.social test the biggest objection to letting foreign residents vote locally, and find it doesn't hold up. 🧵 simonhix.substack.com/p/why-not-gi...

New working paper w/ @denis-cohen.bsky.social @rantuna.bsky.social & @turnbulldugarte.com! *Does publicly refusing to cooperate with the far right only strengthen it?* A widespread belief says yes. In this paper, we test it based on a natural experiment from Spain. tinyurl.com/5azkfnas [1/6]

The debate about Borjas/Breznau's paper on ideological bias in migration research is out now @i4replication.bsky.social. With a comment by Katrin Auspurg & Josef Brüderl: hdl.handle.net/10419/341575 And a reply by the original authors: hdl.handle.net/10419/341576

Representativeness and response validity across nine opt-in online samples

Are preferences for authoritarian rule individual predispositions—or can they spread socially? Using field + survey experiments in the Norwegian Armed Forces, we show that openness to strongman rule can spread socially. American Journal of Political Science: onlinelibrary.wiley.com/doi/10.1111/...

🧵 Introducing ReproAI, an author-facing agentic AI plugin for replication packages: reproai.org We built this tool to help authors prepare replication packages before submission, w/ @leoyangyang.bsky.social.

🔄 Starting shortly – EPSS Roundtable 1 on Standards for Replication in Political Science with Daniel Bischhof, Yara Bochkareva, Andrew Eggers, Joris Frese & Macartan Humphreys from 10:50 - 12:30 | Bar 2 (ICC)

Now traveling to @epssnet.bsky.social I would like to draw your attention to a panel on: Standards for Replication in Political Science 10:50-12:30 Thursday, 18 June, 2026, Bar 2 w. @bochkareva.bsky.social @fresejoris.bsky.social @macartan.bsky.social @aeggers.bsky.social and myself.

The White House has moved to ban almost all work authorization for asylum seekers, indefinitely. In my new note with the brilliant Natalia Rigol & Amy Nice, we assess White House claims that work authorization 1) harms US workers and 2) causes frivolous asylum claims. www.hbs.edu/faculty/Page...

Check for replications of a specific article or your entire Zotero library - it only takes a few seconds with our Zotero Replication Checker. Download it for free at forrt.org/flora-zotero/ @zotero.org @forrt.bsky.social

⚽📚 The Ultimate World Cup Research Thread I've set up a little automated thread: every day of the 2026 World Cup (11 Jun–19 Jul) it shares one study on what football does to society: politics, economics, migration, health, crime & more. One paper a day. Kickoff below 👇

New paper out in the @thejop.bsky.social (w/ @christinagahn.bsky.social) Do opinion polls shape election results? Using both cross-national data and a survey experiment, the answer we find is yes - though it depends on how we communicate polling results. www.journals.uchicago.edu/doi/10.1086/...

🚨 What happens with voters when politicians use simpler language? New @thejop.bsky.social paper with @rsenninger.bsky.social: simple language changes not just what citizens understand, but who they think politicians are. www.journals.uchicago.edu/doi/10.1086/...

This is a great study and (one of?) the first of its kind! A note of caution from a human contributor though: given the slow academic publishing process, the findings should primarily be interpreted as a snapshot of AI capabilities (and the capabilities of researchers using AI) in 2024. (1/4)

🚨NEW PUBLICATION🚨 in Science Advances. We meta-reanalyze 100 conjoint experiments to assess which immigrants citizens prefer around the world. Our evidence reinforces existing findings, identifies novel insights, and provides a basis for future research 1/n www.science.org/doi/10.1126/...

We have a new paper out in PNAS. Susanna’s thread outlines our findings. The big picture takeaway is that well-designed climate education (active, personally relevant, science-based) can complement fiscal and regulatory instruments by building public support for ambitious policy!

1/ New @Nature! We study how powerful institutions shape the information environment for LLMs. Commercial LLM training is opaque, so we trace a path from state-coordinated media -> training data -> model responses.

On 7 May 2026, Britain ran a PR experiment: Scottish Parliament: a Mixed-Member Proportional system Welsh Senedd: a (new) Low-Magnitude Party List system Same day, same political context, different outcomes. Which version of PR would be better for Westminster? 🧵

It takes a village to produce research with impact. This is the idea that motivated us to write this paper, published today.  Kudos to the team: @lluisdanus.bsky.social @william-dinneen.bsky.social @carotorreblanca.bsky.social @guygrossman.bsky.social @asc.upenn.edu www.pnas.org/doi/10.1073/...

Interesting paper on minimum detectable effects and underpoweredness www.cambridge.org/core/journal...

🚨🚨Welcome and very significant news on #EU-UK relationship and #brexit reversal: yesterday, the European Union and the United Kingdom have enabled the UK's association to #Erasmus+ in 2027. 🧵 ec.europa.eu/commission/p...

🚨New Paper in PNAS: "Refugee Labor Market Integration at Scale: Evidence from Germany’s Fast-Track Employment Program" www.pnas.org/doi/10.1073/... Ungated preprint osf.io/preprints/socarxiv/px9ew_v3 w/ J Hainmueller, D Hangartner, @niklas-harder.bsky.social & E Vallizadeh #econtwitter #econsky

New study out in Nature Human Behaviour: 37 million US users were exposed to deceptive networks on Facebook & 3 million on Instagram during the 2020 elections—roughly 15% and 2% of active users. 🧵