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Ruomeng Liu

@liu_ruomeng

Ruomeng Liu أعاد

New research finds that conservatives tended to endorse moral absolutism, whereas liberals tend to endorse moral relativism. Moral absolutists are more likely to support banning practices they deem immoral psycnet.apa.org/record/2026-54…

jayvanbavel's tweet image. New research finds that conservatives tended to endorse moral absolutism, whereas liberals tend to endorse moral relativism.

Moral absolutists are more likely to support banning practices they deem immoral psycnet.apa.org/record/2026-54…

Ruomeng Liu أعاد

🚨 New working paper! 🚨 Happy to share my new data on affective polarization by party across states, CDs, counties, and towns from 2009-23. Key point: polarization is not just an individual trait... contexts and electorates can be "polarized" too! 1/ papers.ssrn.com/sol3/papers.cf…

sethbwarner's tweet image. 🚨 New working paper! 🚨

Happy to share my new data on affective polarization by party across states, CDs, counties, and towns from 2009-23.

Key point: polarization is not just an individual trait... contexts and electorates can be "polarized" too! 1/

papers.ssrn.com/sol3/papers.cf…
sethbwarner's tweet image. 🚨 New working paper! 🚨

Happy to share my new data on affective polarization by party across states, CDs, counties, and towns from 2009-23.

Key point: polarization is not just an individual trait... contexts and electorates can be "polarized" too! 1/

papers.ssrn.com/sol3/papers.cf…

Ruomeng Liu أعاد

Very interesting!

edenhofer_jacob's tweet image. Very interesting!

Ruomeng Liu أعاد

🚨 New paper alert 🚨 Using LLMs as data annotators, you can produce any scientific result you want. We call this **LLM Hacking**. Paper: arxiv.org/pdf/2509.08825

joabaum's tweet image. 🚨 New paper alert 🚨 Using LLMs as data annotators, you can produce any scientific result you want. We call this **LLM Hacking**.

Paper: arxiv.org/pdf/2509.08825

Ruomeng Liu أعاد

🇺🇸 Can watching dialogue across party lines reduce polarisation? ➡️ L-O Ankori-Karlinsky, @robert_a_blair, J. Gottlieb & @smooreberg show that a documentary of an intergroup workshop reduces polarisation and boosts faith in democracy cambridge.org/core/journals/… #FirstView

PSRMJournal's tweet image. 🇺🇸 Can watching dialogue across party lines reduce polarisation?

➡️ L-O Ankori-Karlinsky, @robert_a_blair, J. Gottlieb & @smooreberg show that a documentary of an intergroup workshop reduces polarisation and boosts faith in democracy cambridge.org/core/journals/… #FirstView
PSRMJournal's tweet image. 🇺🇸 Can watching dialogue across party lines reduce polarisation?

➡️ L-O Ankori-Karlinsky, @robert_a_blair, J. Gottlieb & @smooreberg show that a documentary of an intergroup workshop reduces polarisation and boosts faith in democracy cambridge.org/core/journals/… #FirstView

Ruomeng Liu أعاد

1st paper from my lab out @CommunicationsPsychology @CommsPsychol nature.com/articles/s4427… We show an alternative way to understand how people mentally represent other people's characteristics, namely high-dimensional networks, beyond the popular latent factor models.

🚨3rd preprint from my lab out! with my awesome grad @LuJunsong19474🌟 How do people mentally represent numerous inferences about others?🤯 Prior work proposed low-dimensional rep with latent dimensions We show high-dimensional network brings new insights🧵👇…



Ruomeng Liu أعاد

Currently in FirstView: In “Attention and Political Choice: A Foundation for Eye Tracking in Political Science,” Libby Jenke and Nicolette Sullivan explain what eye tracking allows researchers to measure and how these measures are relevant to political science questions.

polanalysis's tweet image. Currently in FirstView: In “Attention and Political Choice: A Foundation for Eye Tracking in Political Science,” Libby Jenke and Nicolette Sullivan explain what eye tracking allows researchers to measure and how these measures are relevant to political science questions.

Ruomeng Liu أعاد

This is a useful reading list on recent advances in econometrics.

heimbergecon's tweet image. This is a useful reading list on recent advances in econometrics.

Ruomeng Liu أعاد

what are large language models actually doing? i read the 2025 textbook "Foundations of Large Language Models" by tong xiao and jingbo zhu and for the first time, i truly understood how they work. here’s everything you need to know about llms in 3 minutes↓

alex_prompter's tweet image. what are large language models actually doing?

i read the 2025 textbook "Foundations of Large Language Models" by tong xiao and jingbo zhu and for the first time, i truly understood how they work.

here’s everything you need to know about llms in 3 minutes↓

Ruomeng Liu أعاد

🚨 New paper in @ScienceAdvances Can changing how we argue about politics online improve the quality of replies we get? @THeideJorgensen, @a_rasmussen, and I use an LLM to manipulate counter-arguments to see how people respond to different approaches to arguments. Thread 🧵1/n

GregoryEady's tweet image. 🚨 New paper in @ScienceAdvances

Can changing how we argue about politics online improve the quality of replies we get?

@THeideJorgensen, @a_rasmussen, and I use an LLM to manipulate counter-arguments to see how people respond to different approaches to arguments.

Thread 🧵1/n

Ruomeng Liu أعاد

This research advances a mechanistic reward learning account of social learning strategies. Through experiments & simulations, it shows how people learn to learn from others, dynamically shaping the processes involved in cultural evolution. @DSchultner nature.com/articles/s4156…


Ruomeng Liu أعاد

🚨New paper in @TrendsCognSci 🚨 Why do some ideas spread widely, while others fail to catch on? @Jayvanbavel and I review the “psychology of virality,” or the psychological and structural factors that shape information spread online and offline. Thread 🧵(1/n)

steverathje2's tweet image. 🚨New paper in @TrendsCognSci 🚨

Why do some ideas spread widely, while others fail to catch on?

@Jayvanbavel and I review the “psychology of virality,” or the psychological and structural factors that shape information spread online and offline.

Thread 🧵(1/n)

Ruomeng Liu أعاد

Can large language models (LLMs) fairly annotate data on contentious topics? Our new paper dives into this question—looking at whether LLM-generated labels reflect diverse viewpoints or skew toward majority perspectives. The results are surprisingly nuanced. 🧵


Ruomeng Liu أعاد

An AI model (Llama 3.1 70B) fine-tuned on the results of 60,000 people in psychology experiments shows some real promise in using LLMs for studying human behavior. It predicts actual human behavior in held-out data & it generalizes to out-of-distribution tasks and experiments.

emollick's tweet image. An AI model (Llama 3.1 70B) fine-tuned on the results of 60,000 people in psychology experiments shows some real promise in using LLMs for studying human behavior.

It predicts actual human behavior in held-out data & it generalizes to out-of-distribution tasks and experiments.
emollick's tweet image. An AI model (Llama 3.1 70B) fine-tuned on the results of 60,000 people in psychology experiments shows some real promise in using LLMs for studying human behavior.

It predicts actual human behavior in held-out data & it generalizes to out-of-distribution tasks and experiments.
emollick's tweet image. An AI model (Llama 3.1 70B) fine-tuned on the results of 60,000 people in psychology experiments shows some real promise in using LLMs for studying human behavior.

It predicts actual human behavior in held-out data & it generalizes to out-of-distribution tasks and experiments.
emollick's tweet image. An AI model (Llama 3.1 70B) fine-tuned on the results of 60,000 people in psychology experiments shows some real promise in using LLMs for studying human behavior.

It predicts actual human behavior in held-out data & it generalizes to out-of-distribution tasks and experiments.

Ruomeng Liu أعاد

LLMs can effectively depolarize social media content while maintaining textual coherence, finds Santos et al., using a between-subjects experiment doi.org/10.1145/371786…

Ross_Dahlke's tweet image. LLMs can effectively depolarize social media content while maintaining textual coherence, finds Santos et al., using a between-subjects experiment doi.org/10.1145/371786…
Ross_Dahlke's tweet image. LLMs can effectively depolarize social media content while maintaining textual coherence, finds Santos et al., using a between-subjects experiment doi.org/10.1145/371786…
Ross_Dahlke's tweet image. LLMs can effectively depolarize social media content while maintaining textual coherence, finds Santos et al., using a between-subjects experiment doi.org/10.1145/371786…
Ross_Dahlke's tweet image. LLMs can effectively depolarize social media content while maintaining textual coherence, finds Santos et al., using a between-subjects experiment doi.org/10.1145/371786…

Ruomeng Liu أعاد

This is a stellar paper -- highly recommend if you want an incisive birds-eye view of AI + political science annualreviews.org/content/journa…


Ruomeng Liu أعاد

⁉️In survey experiments, should you ask covariates before the treatment? ➡️@asdurso @TabithaBonilla & G.Bogdanowicz study the effects of placing sensitive items in different parts of the survey flow and offer guidance on optimal question order cambridge.org/core/journals/… #FirstView

PSRMJournal's tweet image. ⁉️In survey experiments, should you ask covariates before the treatment?

➡️@asdurso @TabithaBonilla & G.Bogdanowicz study the effects of placing sensitive items in different parts of the survey flow and offer guidance on optimal question order cambridge.org/core/journals/… #FirstView
PSRMJournal's tweet image. ⁉️In survey experiments, should you ask covariates before the treatment?

➡️@asdurso @TabithaBonilla & G.Bogdanowicz study the effects of placing sensitive items in different parts of the survey flow and offer guidance on optimal question order cambridge.org/core/journals/… #FirstView

Ruomeng Liu أعاد

🧵 NEW PAPER - "Quantifying Narrative Similarity Across Languages" is live at SMR. We combine NLP w pairwise LLM evals to track ideas across media ecosystems and languages. We also figured out a way to eval unsupervised probs on widely understood supervised performance metrics.

SolomonMg's tweet image. 🧵 NEW PAPER - "Quantifying Narrative Similarity Across Languages" is live at SMR. We combine NLP  w pairwise LLM evals to track ideas across media ecosystems and languages. We also figured out a way to eval unsupervised probs on widely understood supervised performance metrics.

Ruomeng Liu أعاد

Interesting paper: 161 researchers in 73 research teams used the same data and hypothesis (immigration reduces support for social policies among the public), but arrived at different results and conclusions. Paper in PNAS

heimbergecon's tweet image. Interesting paper: 161 researchers in 73 research teams used the same data and hypothesis (immigration reduces support for social policies among the public), but arrived at different results and conclusions.

Paper in PNAS

Ruomeng Liu أعاد

This is a really good set of notes, by @urfriendlen leonardgoff.com/teaching/Causa…

BeatrizGietner's tweet image. This is a really good set of notes, by @urfriendlen leonardgoff.com/teaching/Causa…
BeatrizGietner's tweet image. This is a really good set of notes, by @urfriendlen leonardgoff.com/teaching/Causa…

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