Andreu Casas

@andreucasas.bsky.social

Associate Professor of Political Communication and Computational Social Sciences at Royal Holloway University of London. Director of the London Social Media Observatory. UKRI Future Leader Fellow.

🔥 Happening now: The 2nd General Assembly Meeting of the WHAT-IF project is currently taking place in 📍 Bucharest, Romania. Over the coming days, partners from across the consortium will come together to share progress, discuss preliminary findings and explore new research ideas. Stay tuned!

BildBild

🧵on my new paper "Synthetic personas distort the structure of human belief systems" w Roberto Cerina I'm v excited about... 🚨 Do synthetic samples look like human samples? We compare 28 LLMs to the 2024 General Social Survey (GSS) to find out + develop host of diagnostics...

This is very timely! We looked into the posting/moderation anomalies last week in the US. Special kudos to @benguinaudeau.bsky.social @solmg.bsky.social and @kengchichang.bsky.social. An outage rather than targeted censorship is what makes the most sense in this case, we’ll stay vigilant.

London Social Media Observatory@ldnsocmedobs.bsky.social · 6mo ago

🌐 📲 With international collaborators, the Observatory’s director @andreucasas.bsky.social revisited recent “TikTok censorship” claims after the TikTok USDS takeover ➡️ Detailed information about the analysis available: goodauthority.org/news/was-the... 🧵[1/5]

🚨 One more week to apply to the PhD position at the London Social Media Observatory. If you are interested in empirical, quantitative, and/or computational approaches to studying social media and politics, apply! 😊

London Social Media Observatory@ldnsocmedobs.bsky.social · 10mo ago

🔭🚨 One more week to apply to the fully funded (3.5 years) PhD position at the Observatory! 💻 Deadline: 2nd November ℹ️ For more information, see the link below! ➡️ www.royalholloway.ac.uk/media/hquftp...

Very happy to have people from our @ldnsocmedobs.bsky.social attend the DSA40 Data Access Days organized by @dsa40collaboratory.bsky.social. With threats to our online and political safety in the rise, access to platform data for independent and academic researchers is more important than ever.

London Social Media Observatory@ldnsocmedobs.bsky.social · 10mo ago

🇩🇪 Hello from Berlin! 📍This week, LSMO is at the #DSA40 Workshop, thanks @dsa40collaboratory.bsky.social for the invitation! 🤝 We’re here to connect with other academics to learn more about how to access platform data for research via DSA & to advocate for better data access more generally 🧵[1/3]

🥰I had so much fun again teaching computer vision and other computational methods to these bright social scientists this week. (Un)supervised classification, image encoding, content similarity, object detection, face detection/analysis, muldimodal modeling, video data, etc., you name it!

📣 Last Call! We still have spots left for our #GESISfallseminar course on Computer Vision for Image and Video Data Analysis with @andreucasas.bsky.social. Join us before it’s too late!⏳ ➡️ t1p.de/ImageVideoAn...

GESIS Training@gesistraining.bsky.social · last yr.

Do you want to use computer vision for analyzing image and video data? Join @andreucasas.bsky.social in his #GESISfallseminar course to gain theoretical & methodological expertise and benefit from hands-on tutorials & consulting sessions. More info & registration at t1p.de/ImageVideoAn...

GESIS Fall Seminar in CSS
Computer Vision for Image and Video Data Analysis
15 to 19 September | Mannheim
Andreu Casas (Royal Holloway University of London)

On my way to Madrid-EPSA! Please join in if you want to hear about (political biases? in) content moderation on YouTube during the 2024 US Election, and/or about using open-source Large Visual Language Models (VLMs) for supervised multimodal classification in political science research.

🚨New Publication @thejop.bsky.social We study who sets the issue agenda of state policymakers in the US. We find a mixed picture: they respond to shifts in attention by members of Congress, but also to the constituents in their states, particularly their own party supporters.

NYU's Center for Social Media, AI, and Politics@csmapnyu.org · last yr.

Amid growing DC gridlock, state legislatures play a vital role in shaping policy. But how do state lawmakers decide which issues deserve their attention? Our new @thejop.bsky.social paper is the first large-scale multi-state analysis exploring this question www.journals.uchicago.edu/doi/10.1086/...

Title: Bottom Up? Top Down? Determinants ofIssue-Attention in State Politics

Abstract: Who shapes the issue-attention cycle of state legislators? Although state governments make critical policy decisions, data and methodological constraints have limited re-searchers’ ability to study state-level agenda setting. For this paper, we collect more than 122 million Twitter messages sent by state and national actors in 2018 and 2021.We then employ supervised machine learning and time series techniques to study how the issue-attention of state lawmakers evolves vis-`a-vis various local- and national-level actors. Our findings suggest that state legislators operate at the confluence of national and local influences. In line with arguments highlighting the nationalization of state politics, we find that state legislators are consistently responsive to policy debates among members of Congress. However, despite growing nationalization concerns, we also find strong evidence of issue responsiveness by legislators to members of the public in their states and moderate responsiveness to regional media sources.

1/ Excited to share our new paper, “Can foreign aid reduce the desire to emigrate? Evidence from a Randomized Controlled Trial,” w/ Cassilde Schwartz (@rhulpirp) & @profdavidhudson (@iddbirmingham) — published in @AJPSeditor! onlinelibrary.wiley.com/share/CFSFRF...

Can foreign aid reduce the desire to emigrate? Evidence from a randomized controlled trial

You have to enable JavaScript in your browser's settings in order to use the eReader.

onlinelibrary.wiley.com

We had an amazing time in the kick-off meeting. Brilliant and diverse people working on novel approaches to addressing important and timely challenges. Follow the project account and stay tuned!

WHAT-IF@what-if-horizon.bsky.social · 2y ago

Our project #WHAT-IF is live! 🚀 Disinformation and hate speech threaten democratic discourse. WHAT-IF is building a digital twin of the political information landscape to test interventions and foster healthier democracies. Stay tuned for updates and check our brand-new website: what-if-horizon.eu

Are the platforms ready for the German elections? 🇩🇪🗳️ The @ec.europa.eu have requested platforms like X, Meta, TikTok, Google, and Microsoft to a meeting this week. The EC wants to stress test the companies on election interference, AI and disinformation campaigns. techcrunch.com/2025/01/24/t...

The EU wants to talk to US tech companies ahead of Germany's upcoming election | TechCrunch

The EU plans on holding a "stress test" for these tech companies to see if they are compliant with the EU Digital Services Act.

techcrunch.com

It's Sunday! What a perfect day to support this #ResearchInfrastructure initiative! If you like to work with political data & agree that mapping concepts, indicators, and linking 🔗 diverse datasets can advance #DemocracyResearch 🗳️ for everyone, add your name to show your support. Sign up here ✍️🤝

MEDem - Personal Expression of Endorsement

To whom it may concern, The social sciences and humanities play an indispensable role in understanding the functioning of democracies and comprehending the intricate dynamics between citizens, elites,...

forms.gle

MEDem@medem.bsky.social · 2y ago

🌍📊 #MEDem will facilitate comparative #DemocracyResearch by harmonizing data on countries, institutions, parties, politicians, media, and voters – making it easier to link #DemocracyData across actors, space, and time 🔗. Discover more at medem.eu and join the #MEDemCommunity! 🚀

EU is asking X for internal documents about its algorithms. "The company has been accused of manipulating the platform’s systems to give far-right posts and politicians greater visibility over other political groups." www.theguardian.com/technology/2...

EU asks X for internal documents about algorithms as it steps up investigation

Musk’s company has been accused of manipulating systems to give far-right posts and politicians greater visibility

theguardian.com