Temas de Investigación

Mis proyectos de investigación exploran cómo las opiniones políticas se forman y evolucionan en entornos digitales, con foco en la desinformación y las fake news. Estudio cómo las personas de distintos países procesan información política online y cómo la exposición a distintos tipos de correcciones, mensajes y señales influye en sus creencias y comportamientos políticos. Metodológicamente, realizo experimentos y análisis de grandes volúmenes de datos observacionales, y complemento estos enfoques con entrevistas cualitativas a periodistas y actores del ámbito profesional.

Redes Sociales

Campañas Electorales

Desinformación y Fact Checking

Psicología Política

Encuestas y Opinión Pública

Métodos Experimentales

Proyectos de Investigación

(En inglés)

Correct Me If I’m Bot: Generative AI and the Automation of Political Fact-Checking

Despite growing interest in the use of generative AI for fact-checking of political news, existing research offers limited knowledge into how these tools operate in real-world settings. This is largely due to the private nature of interactions with LLMs, which has made it difficult to observe how users engage with them at scale. This project leverages a recent shift: in 2025, X (formerly Twitter) launched its public-facing AI assistant, Grok, which allows users to pose factual questions in an open environment. Using a newly collected dataset of interactions based on representative samples of X users from four countries, I provide the first systematic evidence on the adoption, performance, and potential risks of fully automated political fact-checking.

The Language of Truth: How Lexical Choices Influence Fact-Checking Reception

People who support outsider or anti-establishment political leaders tend to believe and share misinformation more often, yet they are the least likely to trust or engage with fact-checkers. This mixed-methods project aims to identify specific aspects of factual corrections that might turn these groups away. I show through observational data that online fact-checkers use linguistic markers that are less morally charged and more associated with a liberal identity than other media outlets, even those considered liberal. I propose a survey experiment to test whether changes in these linguistic features can increase acceptance of corrections and trust in fact-checking among skeptical audiences.

Campaign Negativity and Political Participation in the Social Media Era

(With Asahi Obata and Randy Stevenson) Do negative political campaigns lead to lower political participation? We revisit this question in the current era of multiple social and media platforms. While several studies have explored whether negative campaigns on traditional media lead to demobilization, we argue that this relationship is conditional on the media voters see negative campaigning on. We test this through the first immersive artefactual field experiment in the study of social media platforms.

Financiamiento para actividades de investigación

He obtenido becas y fondos de estas instituciones para realizar y presentar mis proyectos de investigación durante mis estudios de doctorado.

Docencia

He trabajado como ayudante docente en cursos de grado de Política Comparada y Política de Estados Unidos, tanto en español como en inglés, y en cursos de máster y doctorado sobre estadística y métodos cuantitativos. Tengo experiencia liderando debates en clase y evaluando el desempeño de los estudiantes a través de trabajos prácticos y exámenes. En 2024 obtuve el Graduate Certificate in Teaching and Learning en Rice.

Mi estilo docente se centra en promover la participación activa de los estudiantes y en generar experiencias de aprendizaje interactivas. También le doy mucha importancia al uso de multimedia en el aula, tanto para mantener la atención como para ejercitar las habilidades necesarias para informarse y comunicarse en entornos digitales.

Experiencia

Quantitative Applications in Global Affairs (2024)
Prof. Daniel Potter
Universidad Rice
Eval. de estudiantes: 4.9
Introduction to American Politics (2023)
Prof. Jaclyn Kaslovsky
Universidad Rice
Eval. de estudiantes: 4.4
Sistemas Políticos Comparados (2021)
Prof. Ana Maria Mustapic
Universidad Torcuato Di Tella
Eval. de estudiantes: 4.3

Comentarios de alumnos (en inglés)

Agustin was amazing. He gave excellent feedback on papers, graded very fairly, and drove discussions forward with compelling and interesting slideshows.

We had a lot of fun debates, questions, and ideas in our section -- making it the highlight of the entire class for me, due in large part to Agustin's energy, poise, experience, and guidance.

He was a great TA and discussion leader, and always provided opportunities for each student to share their thoughts in class.

Agustin was fun and engaging while being informative. His presentations had the right balance of information and entertaining details.

Felt extremely comfortable going to Agustin for questions.