Hello, I'm Junseo Kim.

I'm an integrated M.S./Ph.D. student at Seoul National University, advised by Professor Gunhee Kim. My research aims to build human-centered, trustworthy agents that understand the world both socially and physically, and that act and communicate consistently with what they know and the norms they should uphold.

My work is rooted in cognitive reasoning, the study of how agents think. My interests run across a few connected threads:

  • Social intelligence. How agents read intentions and relationships, and navigate deception, persuasion, social hierarchies, and intimacy.
  • Knowing-doing gap. Why an agent that knows the right action can still fail to take it.
  • Physical common sense. Grounding agents in causal world models of embodied environments, as a step toward physical intelligence.
  • Conversational behavior gap. The divide between what an agent intends and how it actually communicates.

Currently, my research centers on the knowing-doing gap and physical common sense.

Experience

Dec 2023 – Sep 2024
Graduate School of Data Science, Seoul National University
Undergraduate Internship at HOLI Lab
Sep 2024 – Aug 2025
Department of Computer Science and Engineering, Seoul National University
Undergraduate Internship at SNUVL Lab
Sep 2025 – Present
Graduate School of AI, Seoul National University
Ph.D. Student, under the supervision of Prof. Gunhee Kim

Publications

Lies We Can See: Joint Verbal and Non-Verbal Deception by VLM Agents in Embodied Social Interactions
Jaewoo Ahn*, Junseo Kim*, Hyunseo Kim, Heeseung Yun, Jaehyeon Son, Zsolt Kira, Gunhee Kim (* equal contribution)
Under Review
Honorific Speech and the Spiral of Silence: Implicit Hierarchies in Korean LLM Multi-Agent Debates
Junseo Kim, Gunhee Kim
KCC 2026
Jaewoo Ahn*, Junseo Kim*, Heeseung Yun, Jaehyeon Son, Dongmin Park, Jaewoong Cho, Gunhee Kim (* equal contribution)
EMNLP 2025 (Main)
Junseo Kim, Jongwook Han, Dongmin Choi, Jongwook Yoon, Eun-Ju Lee, Yohan Jo
ACL 2025 (Main)

About Me

I'm someone who gains energy through conversations with people, and I enjoy sharing research ideas and working together to solve problems. I'm open to collaborating across diverse fields, and I'd love to exchange ideas even if we are not in the same area.

Outside the lab, I have two long-standing passions: brewing hand-drip pour-over coffee, which I've enjoyed for over five years, and following Formula 1 🏎️ as a long-time fan, proudly flying the papaya flag for McLaren.