Sebastián Vallejo Vera's Avatar

Sebastián Vallejo Vera

@svallejovera.bsky.social

Assistant Professor at Western University | Legislative politics, gender and politics, racism and politics, and NLP (and politics). http://svallejovera.com

174 Followers  |  298 Following  |  37 Posts  |  Joined: 20.11.2024
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Posts by Sebastián Vallejo Vera (@svallejovera.bsky.social)

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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!

04.03.2026 19:49 — 👍 1    🔁 1    💬 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

03.03.2026 10:06 — 👍 2    🔁 2    💬 0    📌 0

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

19.02.2026 00:21 — 👍 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...

11.02.2026 17:06 — 👍 11    🔁 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

18.02.2026 21:18 — 👍 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

18.02.2026 19:21 — 👍 76    🔁 26    💬 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

10.02.2026 18:19 — 👍 2    🔁 4    💬 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/...

09.02.2026 15:13 — 👍 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...

09.02.2026 15:13 — 👍 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.

09.02.2026 15:13 — 👍 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/...

09.02.2026 15:13 — 👍 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

02.02.2026 10:20 — 👍 3    🔁 2    💬 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 ☄️

29.01.2026 22:00 — 👍 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!

27.01.2026 22:16 — 👍 77    🔁 70    💬 0    📌 3
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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...

21.01.2026 14:01 — 👍 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...

22.01.2026 13:32 — 👍 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

19.01.2026 17:24 — 👍 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...

14.01.2026 13:02 — 👍 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.

12.01.2026 14:39 — 👍 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...

10.01.2026 01:04 — 👍 2    🔁 2    💬 1    📌 0

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.

10.01.2026 01:04 — 👍 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:

10.01.2026 01:04 — 👍 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...

10.01.2026 01:04 — 👍 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...

10.01.2026 01:04 — 👍 2    🔁 2    💬 1    📌 0
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¡Atención! 🚨 Se viene un nuevo Café ALACIP: "América Latina bajo presión: La encrucijada geopolítica".

Contaremos con: ✅ A. Pérez-Liñán ✅ A. Aguiar ✅ O. Amorim Neto ✅ V. Mijares 🎤 Modera: Gisela Sin

📅 13 de enero ⏰ 9:30 MX / 10:30 COL-PER / 12:30 Cono Sur 📺 En vivo por YouTube (@alacip2216)

08.01.2026 22:55 — 👍 2    🔁 1    💬 0    📌 0
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¡Atención! 🚨 Se viene un nuevo Café ALACIP: "América Latina bajo presión: La encrucijada geopolítica".

Contaremos con: ✅ A. Pérez-Liñán ✅ A. Aguiar ✅ O. Amorim Neto ✅ V. Mijares 🎤 Modera: Gisela Sin

📅 13 de enero ⏰ 9:30 MX / 10:30 COL-PER / 12:30 Cono Sur 📺 En vivo por YouTube (@alacip2216)

08.01.2026 22:57 — 👍 8    🔁 4    💬 0    📌 1

Western is searching for Canada Impact+ Chairs in 8 themes including "democratic and community resilience." The program is meant for senior researchers not at Canadian unis.

Moving to Canada is a thing that profs really can do. Spread the word & get in touch.

www.uwo.ca/facultyrelat...

18.12.2025 23:30 — 👍 6    🔁 1    💬 1    📌 0
Photo of the book City Politics in Canada.

Photo of the book City Politics in Canada.

Picture of the chapter by Luc Turgeon on Ottawa in the book.

Picture of the chapter by Luc Turgeon on Ottawa in the book.

Santa came early this year and I just received my copy of City Politics in Canada, edited by Martin Horak, @jacklucas.bsky.social and @bigcitypolitics.bsky.social. I wrote the chapter on Ottawa (dedicated to the late Caroline Andrew).

18.12.2025 20:35 — 👍 7    🔁 2    💬 1    📌 1
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Texas Methods Conference 2026 Please answer the following questions to indicate your interest in attending and/or participating at our conference, which is scheduled to take place on Friday and Saturday, February 20-21, at Texas A...

Calling those looking to get feedback on their quant work📢: Join us at @TexasAM for TexMeth2026 this Feb. Great opportunity to connect with the regional community and showcase your research. The sun will still be strong for those coming from the north!🤝📊☀️

Apply: docs.google.com/forms/d/e/1F...

08.12.2025 17:45 — 👍 4    🔁 3    💬 0    📌 0
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Currently in FirstView: In “Survey Professionalism: New Evidence from Web Browsing Data,” Bernhard Clemm von Hohenberg, @tiagoventura.bsky.social, Tiago Ventura, @jonathannagler.bsky.social, @ericka.bric.digital, & Magdalena Wojcieszak provide evidence on survey professionalism across three samples.

04.12.2025 18:05 — 👍 11    🔁 8    💬 1    📌 0