About
I am a predoctoral researcher at KAIST’s Center for Digital Humanities and Computational Social Sciences, having recently graduated with a Master of Science in Computational Social Science from the School of Digital Humanities and Computational Social Sciences, where I was advised by Prof. Taegyoon Kim. I previously graduated with dual degrees from the University of Arizona in Computer Science and Political Science with a concentration in Foreign Affairs, where I was advised by Prof. Yotam Shmargad.
Selected Publications
Game-Theoretic Solvers with Bayesian Opponent Modeling and Moral Rhetoric Framing for GLEE
Hayden Arnold
1st Workshop on Interactive Agent Behavior (IAB) @ NeurIPS
How Does Toxicity Emerge in Political Livestreams? Large-Scale Evidence from Twitch
Hayden Arnold, Sangyeon Kim, Taegyoon Kim
Journal of Communication (under review) (2026)
Evidence-Based Language Increases Persuasion in Online Debates: Insights from 1.6M Reddit Discussions (2013–2024)
Joohee Choi*, Hayden Arnold*, Taegyoon Kim, Jeongwoo Jang
* equal contribution
Scientific Reports (under review) (2026)
Large Language Models are Not Always Faithful in Explaining Their Political Decision Making
Quang Minh Nguyen*, Hayden Arnold*, Taegyoon Kim
* equal contribution
NAACL 2027 (under review) (2026)
Measuring and Forecasting Conversation Incivility: the Role of Antisocial and Prosocial Behaviors
Xinchen Yu, Hayden Arnold, Benjamin Su, Eduardo Blanco
International AAAI Conference on Web & Social Media (ICWSM) (2025)
Statistical Trends in Online Anti-Feminism and the 2022 South Korean Presidential Election
Hayden Arnold, Yotam Shmargad
University of Arizona (2024)