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Posts by Sebastián Vallejo Vera

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The ICS ranges from 0-200. Republicans are way below where they were with Trump I and about where Dems were under Biden. Dems are even below where Reps were under Biden. Independents have never been lower. The ICS is full of partisanship but when so many things go badly, almost everyone notices.

1 week ago 3 1 0 0
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Episodes of sustained protest: temporal patterns of online mobilization on X The rise of social media has allowed the rapid manifestation of collective actions that are both large in scale and persist over extended periods of time. Yet, little is known about how the mobiliz...

#OutNow in #iCS
This article examines how Freedom Convoy supporters on X have evolved their messaging over time. Early posts focused on mobilisation and logistics, while later ones leaned on anger and fear to hold a shrinking protest community together. www.tandfonline.com/doi/full/10....

5 months ago 3 1 0 0
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My new book, "Unity Through Particularism: How Electoral Reforms Influence Parties and Legislative Behavior," is finally out with Cambridge University Press.

A 20% discount is available on the Cambridge site using the code UYTPM25.

www.cambridge.org/us/universit...

4 weeks ago 15 5 2 0

Francisco was a brilliant scholar and amazing human being. It is wonderful to see a scholarship named after him.

4 weeks ago 2 0 0 0
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How much does it pay to publish an open access academic book? Read this thread for my story and 💲💰 amounts. 🧵

www.routledge.com/9781032908724

1 month ago 132 27 8 0
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job

Canada Research Chair, Tier 1 in AI & Inequality (Full or Associate Professor) - Western University

Closing Date to Apply: Review of applications will begin on April 10, 2026 and continue until the position is filled.

csn-rec.ca/job-postings...

@cpsa-acsp.bsky.social

1 month ago 1 3 0 0
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📣 Call for Papers (SeLAB 2026) 📣

Submit paper & poster proposals for the 4th annual Southeast Latin American Behavior (SeLAB) mini-conference, Fri, Oct 23, 2026 at University of Maryland, College Park.

Submit: forms.gle/GMB62rfo9BNuRY…

Hope to see you in Maryland this fall!

1 month ago 2 2 0 0
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Dr Luis L. Schenoni awarded Luciano Tomassini Latin American International Relations Book Award UCL Department of Political Science & School of Public Policy is delighted to share that Dr Luis L. Schenoni has been given the prestigious award for his book.

“Receiving the Luciano Tomassini Award is truly one of the greatest honours of my career. I accept it with deep humility and gratitude." — @llschenoni.bsky.social

Find out more about Dr Luis L. Schenoni' book and award: tinyurl.com/LASASchenoni

@ucl.ac.uk #Books #InternationalRelations #LASA

1 month ago 2 2 0 0
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If anyone is interested in different forms of racist discourse in text, do I have a paper for you!!!

2 months ago 1 1 0 0
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Double Glass Ceiling Cambridge Core - Politics: General Interest - Double Glass Ceiling

📣📣📣And, just this morning I learned that @yesolakweon.bsky.social & @jeonghyunkim.bsky.social is available for free download too!! Be sure to get your cooy in the next 2 weeks 🎉📚🦉 www.cambridge.org/core/element...

2 months ago 12 4 1 2
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Emancipation May Have Generated the Largest Economic Gains in US History Conventional economic analysis of slavery overlooks the costs imposed upon the people who were enslaved.

“Focusing on the cost of enslavement to the enslaved shows that slavery was a market failure in addition to a moral failure.”

via @rickhornbeck.bsky.social & @trevondlogan.bsky.social in 2023

www.chicagobooth.edu/review/emanc... #econsky

2 months ago 28 7 0 2
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1/ Sorry for double-posting from X. Sharing a new working paper for the Year of the Horce 🐎:

"An AI-assisted workflow that scales reproducibility in empirical research" (bit.ly/repro-ai) w/ Leo Yang Yang

2 months ago 77 27 4 6
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It’s official → Registration to #CPSA_ACSP26 is open!
See you there? 👉🏽👉🏽 conta.cc/4tqlVCt
@jonathanmalloy.bsky.social @emmettmacfarlane.com @queenspols.bsky.social @westernupolisci.bsky.social
@jlisayoung.bsky.social @matthewlebo.bsky.social @kaelkropp.bsky.social @joannaeveritt.bsky.social

2 months ago 2 5 0 1
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Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

After a long journey, our paper "Machines Do See Color: Using LLMs to Classify Overt and Covert Racism in Text" is out at Sociological Methods & Research. In it, we develop a theoretically driven approach to identify and classify covert and overt racism in text:

journals.sagepub.com/doi/10.1177/...

2 months ago 4 3 1 1
GitHub - svallejovera/smr_racism: Replication code and date for "Machines Do See Color: Using LLMs to Classify Overt and Covert Racism in Text". Replication code and date for "Machines Do See Color: Using LLMs to Classify Overt and Covert Racism in Text". - svallejovera/smr_racism

We are very happy with the results. If you would like to replicate them, or apply the method, here is the link to the repository:

github.com/svallejovera...

2 months ago 0 0 0 0

We propose a method in which we explicitly integrate contextual knowledge of racist content into the machine-learning approach, taking advantage of LLMs. We show, step-by-step, how this is achieved and the performance gains by looking at the Indígena protests in Ecuador in 2019.

2 months ago 1 0 1 0
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Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

After a long journey, our paper "Machines Do See Color: Using LLMs to Classify Overt and Covert Racism in Text" is out at Sociological Methods & Research. In it, we develop a theoretically driven approach to identify and classify covert and overt racism in text:

journals.sagepub.com/doi/10.1177/...

2 months ago 4 3 1 1
Logo of Political Science Research and Methods featuring the initials "PSRM" in a stylized grey font on a black background.

Logo of Political Science Research and Methods featuring the initials "PSRM" in a stylized grey font on a black background.

#OpenAccess from @psrm.bsky.social -

Beyond the mean: how thinking about the distribution of public opinions reduces politicians’ perceptual errors - https://cup.org/4kltoyE

- Nicholas Dias, @jacklucas.bsky.social & @liorsheffer.bsky.social

#FirstView

2 months ago 2 1 0 0
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Auriane Egal, Scientifique de l’année 2025 de Radio-Canada C'était seulement la septième fois dans l'histoire de l'astronomie qu'un impact d'astéroïde était prédit avec succès avant qu'il ne se produise.

Congrats to Auriane Egal, physics & astronomy adjunct professor and astrophysicist, on being named Radio-Canada's #Scientist of the Year for her work completing the first-ever comprehensive study of an #asteroid tracked from space through to its impact on Earth! @rci.bsky.social ☄️

2 months ago 6 2 0 0
Call for Proposals: Data Collection for
Replication+Novel Political Science Survey Experiments
Alexander Coppock and Mary McGrath
January 27, 2026
We invite proposals for a survey experiment replication+novel design competition. Se-
lected replication+novel design survey experiments will be conducted on large samples of
American respondents, quota sampled to match U.S. Census margins and filtered for quality
and attention by the survey sample provider Rep Data (repdata.com).
Each proposal consists of two parts: (1) a replication study of an existing, previously
published survey experiment, and (2) a novel experimental design on a topic of the authors’
choosing.
The replication studies and reanalyses of the existing studies will be combined into a
meta-paper to be co-authored by all authors of accepted proposals along with the princi-
pal investigators (Coppock and McGrath). As a condition for acceptance, authors commit
to sharing the data and producing a write-up of the findings from their novel design for
submission to a scholarly journal, and public posting of a working paper pre-publication.

Call for Proposals: Data Collection for Replication+Novel Political Science Survey Experiments Alexander Coppock and Mary McGrath January 27, 2026 We invite proposals for a survey experiment replication+novel design competition. Se- lected replication+novel design survey experiments will be conducted on large samples of American respondents, quota sampled to match U.S. Census margins and filtered for quality and attention by the survey sample provider Rep Data (repdata.com). Each proposal consists of two parts: (1) a replication study of an existing, previously published survey experiment, and (2) a novel experimental design on a topic of the authors’ choosing. The replication studies and reanalyses of the existing studies will be combined into a meta-paper to be co-authored by all authors of accepted proposals along with the princi- pal investigators (Coppock and McGrath). As a condition for acceptance, authors commit to sharing the data and producing a write-up of the findings from their novel design for submission to a scholarly journal, and public posting of a working paper pre-publication.

🎺 Call for proposals 🎺

1️⃣ replicate an existing experiment
2️⃣ run a novel experiment

on repdata.com

3️⃣ coauthor with Mary McGrath and me to meta-analyze the replications and existing studies
4️⃣ publish your study

details: alexandercoppock.com/replication_...
applications open Feb 1

please repost!

2 months ago 80 71 0 4
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Meet Professor Laura Stephenson in this week’s Wisdom Wednesdays: Humans of Social Science. From election research to critical citizenship, her story explores how understanding motivation helps us make sense of political life. 🔗 ssc.uwo.ca/humans_ssc/m...

3 months ago 4 2 0 0
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Donald Trump’s turbulent day in Davos ends with hope of ‘forever’ deal on Greenland The U.S. president has said America must acquire the Danish island to protect against national and international security threats.

Matt Lebo, on Carney standing up to the bully:

“If everybody takes a step forward then you’ve done something successfully and banded the kids together to be a united front against the bullying,” he said. “And if all the kids take one step back, then you’re screwed.”

www.thestar.com/politics/fed...

2 months ago 9 2 0 0
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⏳ Deadline approaching! We’re hiring 2 fully funded postdocs in #NLP.

Join the MilaNLP team and contribute to our upcoming research projects (SALMON & TOLD)

🔗 Details + how to apply: milanlproc.github.io/open_positio...

⏰ Deadline: Jan 31, 2026

3 months ago 11 10 0 1
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Conflict on the campaign trail? How campaign effort and electoral competitiveness shape affective polarization Concerns about the consequences of affective polarization for governing and democracy have resulted in a strong surge of publications on the topic. Th…

New paper with Justin Robinson @nuffieldcollege.bsky.social out at @electoralstudies.bsky.social! Our starting point is the observation that there is much variation in affective polarization across the UK.

www.sciencedirect.com/science/arti...

3 months ago 18 7 1 0
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The Body Politics Lab/Political Science Speaker Dr. Tobias Rohrbach (Assistant Prof, Dept of Communication & Media Research, Fribourg U, Switzerland) Wed., Jan 14 @ 2:30pm. This workshop is designed to be an overview of the different steps of conceptualizing, conducting, & reporting a meta-analysis.

3 months ago 1 1 0 0
Client Challenge

I know you all have your THOUGHTS on LLMs and their application in the social sciences... and I agree with all of them, but here is an extension of a method that uses in-context learning (ICL) to improve annotation of text using LLMs:

link.springer.com/article/10.1...

3 months ago 2 2 1 0
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The cool thing is that it does not require researchers to include (ground truth) labels for the method to work. What we are able to do through ICL (we think) is allow the model to understand the task (faster). Anywho, if you are using LLMs to annotate text, give it a try and let us know.

3 months ago 0 0 0 0
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In this article, we show that performance exhibits decreasing marginal returns, with rapid increases at first followed by a plateau. We implement a two-run method where we keep 100 highly informative examples from the first run in the memory at the start of a second run. We provide pretty figures:

3 months ago 2 0 1 0
Memory Is All You Need: Testing How Model Memory Affects LLM Performance in Annotation Tasks

In a previous paper, we show that maintaining the annotated text and the labels produced by the LLM in the prompt increases performance over traditional approaches (e.g., zero-shot and few-shot with CoT):



arxiv.org/html/2503.04...

3 months ago 0 0 1 0
Client Challenge

I know you all have your THOUGHTS on LLMs and their application in the social sciences... and I agree with all of them, but here is an extension of a method that uses in-context learning (ICL) to improve annotation of text using LLMs:

link.springer.com/article/10.1...

3 months ago 2 2 1 0