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Posts by Romain Lachat

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Pre-announcement: Call for questions, Selects 2027
Contribute your questions to the Swiss electoral study during the 2027 federal elections.

📅 Call: end of April 2026
🗓 Deadline: end of June 2026

Selects 2023, including datasets, questionnaires & documentation www.swissubase.ch/en/catalogue...

5 days ago 6 9 0 0
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Investigating the reproducibility of the social and behavioural sciences - Nature A study of reproducibility in a stratified random sample of 600 papers published from 2009 to 2018 in 62 journals spanning the social and behavioural sciences finds higher reproducibility among more&n...

Can published findings be reproduced from the same data + same analysis? As part of SCORE, Miske and 127 co-authors tested this across social and behavioral science papers from 2009–2018.

www.nature.com/articles/s41...

OA: osf.io/preprints/me...

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2 weeks ago 37 20 1 1
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Initiative pour limiter la population suisse à 10 millions - © Chappatte dans Le Temps, Genève 👉chappatte.com

3 weeks ago 53 27 1 1
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Great conference to launch an excellent new book on French Democracy in Distress. @sciencespo-cee.bsky.social @vtiberj.bsky.social @caterinafr.bsky.social @cevipof.bsky.social

2 months ago 24 6 0 1
BJPolS abstract discussing the impact of Voting Advice Applications (VAAs) on electoral outcomes and voter behavior in the European Parliament elections in Germany, Italy, and France. The text mentions a novel regression discontinuity design and statistical analysis of VAA usage and voter alignment.

BJPolS abstract discussing the impact of Voting Advice Applications (VAAs) on electoral outcomes and voter behavior in the European Parliament elections in Germany, Italy, and France. The text mentions a novel regression discontinuity design and statistical analysis of VAA usage and voter alignment.

NEW -

Quality Not Quantity: How a VAA Affected Voting Behavior in Three Large-Scale Field Experiments - https://cup.org/491pwNQ

- @fresejoris.bsky.social, @simonhix.bsky.social & @rlachat.bsky.social

#OpenAccess

4 months ago 11 3 0 0
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🇪🇺🇩🇪 Published Today in @bjpols.bsky.social 🇮🇹🇫🇷

How a voting advice application affected voting behavior in three large-scale field experiments:

shorturl.at/2ekBj

TLDR of our study (with @simonhix.bsky.social & @rlachat.bsky.social) below 👇 1/14

4 months ago 84 32 5 0
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📣 AUTHLIB Final Conference

🗺️ Mapping the Illiberal Challenge: Patterns, Drivers, Consequences
📅 Jan 8–9, 2026
📍 @weareceu.bsky.social, Budapest

Two days on illiberalism, democracy & democratic responses.

👉 Register today to secure your spot: www.authlib.eu/authlib-fina...

4 months ago 3 7 0 3
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Where is the French democracy going?
Very proud of this new collective book

It adresses citizens, parties, institutions, social movements etc... and gathers a brilliant team of scholars

6 months ago 63 15 1 0

Thanks to @fondationmsh.bsky.social and @cerium-udem.bsky.social for making this possible, to our guest speakers: @vinarceneaux.bsky.social @florianfoos.bsky.social @sldelange.bsky.social @simonchauchard.bsky.social @jrovny.bsky.social, and to @rdassonneville.bsky.social for the co-organization

9 months ago 14 0 0 0

@bogatyrev.bsky.social @leonhardschmidt.bsky.social @ludwigschulze.bsky.social @mzuquete.bsky.social @ojrj.bsky.social @pablogg.es @piotrmarczynski.bsky.social @yaseminsivri.bsky.social

9 months ago 11 0 1 0
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The CERIUM-FMSH summer school comes to an end. Thanks to this fantastic group of promising young scholars: @annasawallisch.bsky.social @anninahermes.bsky.social @francescayton.bsky.social @gaetanoinglese.bsky.social @galron3.bsky.social @ginaaniano.bsky.social Isolde Hegemann

9 months ago 37 4 1 8
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Last day of the CERIUM-FMSH summer school. Today with @jrovny.bsky.social on democracy and illiberalism. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social

9 months ago 29 2 0 0
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Day 4 of the CERIUM-FMSH summer school, with @simonchauchard.bsky.social on Misinformation, Rumors and Hate Speech. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social

9 months ago 18 3 0 0

It was great talking about recent developments in campaign and (social) media influence at the CERIUM-FMSH summer school - and even better to learn about so many promising PhD projects on these topics. Thanks for having me in sunny Paris @rlachat.bsky.social & @rdassonneville.bsky.social!

9 months ago 21 5 1 0
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We welcome today @sldelange.bsky.social at the CERIUM-FMSH summer school, to talk about far-right and populist parties. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social

9 months ago 32 7 0 0

For a data collection we want to launch soon, we're looking for a German speaker who could translate our survey instrument to German. This should only take a few hours of work. Of course we are remunerating! Interested? Please reach out to @alexjabbour.bsky.social !

9 months ago 18 27 0 2
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On the second day of the CERIUM-FMSH summer school, @florianfoos.bsky.social discussed about political campaigns and their effects. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social

9 months ago 20 2 0 1
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Day 1 of the CERIUM-FMSH summer school. @vinarceneaux.bsky.social presents research on the effects of social media on public opinion. @rdassonneville.bsky.social @fondationmsh.bsky.social @cerium-udem.bsky.social

9 months ago 20 4 0 0
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Looking forward to welcome the participants of the 2025 CERIUM-FMSH summer school, on Challenges to Electoral Democracy. With @rdassonneville.bsky.social , @fondationmsh.bsky.social, @cerium-udem.bsky.social

9 months ago 35 7 0 1
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2 PhD positions in Electoral behavior 2 PhD positions to research how social group memberships become connected to vote choices

I'm recruiting 2 PhD researchers to work with me on a project studying how social groups influence vote choices!

Info on the position and how to apply 👉 www.kuleuven.be/personeel/jo...

Please share with interested students who would like to move to beautiful Leuven!

10 months ago 80 91 1 3
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The Kleptocracy Presidency Under Trump, conflicts of interest are just part of the system.

"We are living through a revolutionary change, a broad shift away from the transparency and accountability mandated by most modern democracies, and toward the opaque habits and corrupt practices of the autocratic world"

www.theatlantic.com/ideas/archiv...

1 year ago 2050 715 67 56
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Trump is targeting US universities as never before. Here are four ways to help them | Cas Mudde Supporters in Europe can offer new opportunities and minimise the isolation. Certainly they can avoid making things worse, says political scientist Cas Mudde

“even if [Europeans] cannot stop the attacks on US academia, different groups can help US-based academics in other ways.”

My new op-Ed in @theguardian.com

1 year ago 56 27 0 5
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Published Today in PSRM:

Based on a novel “Multiple Unexpected Events during Survey Design” (MUESD), I contextualize previous findings suggesting that Europeans become more empathetic toward migrants when exposed to migrant suffering.

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

A Summary Thread: 1/15

1 year ago 104 40 7 5

🦋 Welcome to our new followers!

You can find here the starter pack gathering our members present on Bluesky.

Go follow them ⏬

go.bsky.app/EBRGCLH

1 year ago 3 3 0 0
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L’Europe veut réarmer - © Chappatte dans Le Temps, Genève 👉 www.chappatte.com/fr/images/le...

1 year ago 33 10 1 1
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Zelensky in the crossfire - © Chappatte in NZZ am Sonntag, Zürich 👉 www.chappatte.com/en/images/ze...

1 year ago 119 40 1 3
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Vu par… Chappatte CARTE BLANCHE. Le dessin paru en une du « Monde » le 4 mars est signé par le dessinateur suisse, membre de l’association Cartooning for Peace.

[LE MONDE]
À la une du journal @lemonde.fr aujourd’hui, un dessin par @chappatte.bsky.social (Suisse) : www.lemonde.fr/idees/articl...

1 year ago 30 10 1 2
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If you understand German: I tried to make the case I am outlining in the thread below on German television.

The Trumpists really mean it. Just as on the domestic level, they are going for regime change - for a fundamentally different world order:

1 year ago 537 126 17 15