Political psychology, political behavior, and causal inference

I am LI Jiajun (Leo), a PhD student in Social Science at The Hong Kong University of Science and Technology. I study how political narratives, institutional presence, and symbolic space shape attitudes and behavior.

My research combines survey and experimental methods with computational social science to identify response bias, trace mechanisms, and estimate behavioral effects in politically sensitive settings.

Current Position

PhD Student, HKUST

Supervisor

Prof. David Hendry

Methods

Causal inference + experiments + computational methods

Research Focus

Political behavior
Political psychology
Causal inference
Experimental methods
Survey methodology
Computational social science
LLM-based simulations

Working paper

The Long Shadow of Heroes: Martyrs' Cemetery, Patriotic Education, and Street Crime

This project examines how political memory embedded in public space shapes social order. Using geocoded crime data and a staggered Difference-in-Differences design, I find that Martyrs' Cemetery Parks reduce nearby crime, especially property crime, with effects varying across distance and commemorative periods.

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Working paper

Reticence or Theatrics? Grassroots Cadre Presence and Political Response in Surveys

This paper studies how grassroots cadre presence changes responses to sensitive survey questions. Using four waves of CFPS (2012-2018), RAG and in-context-learning simulations, and implicit association tests, I show that responses shift toward politically preferred answers through authoritarian cognition.

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In progress

The "Chickening-Out" Judge: Adjudicating Clan Disputes in Court

An ongoing project on adjudication dynamics and judicial behavior in clan dispute cases.

Research Agenda

  • Political behavior and political psychology under authoritarian settings
  • Public memory, patriotic education, and behavioral outcomes
  • Survey response, social desirability bias, and interview context
  • Causal inference and computational approaches to mechanism testing

For fuller abstracts, figures, and paper links, visit the Research page.