Xiaoyi Guo 郭骁毅

Click to see how to pronounce my name (properly): [ˈʃaɪ̯oʊ̯i ˈɡwoʊ̯]

PhD Student in Economics, University of St. Gallen

I am a doctoral researcher at the Swiss Institute of Banking and Finance at the University of St. Gallen. Before joining St. Gallen, I studied at the Alfred Weber Institute at Heidelberg University and Institute of Economics and of Mathematics at Freiburg University, and I worked at ZEW Mannheim.

My research focuses on decision theory, behavioral economics, and microeconomics.

You can download my CV here.

Portrait of Xiaoyi Guo

Contact information

Email: xiaoyi.guo [at] unisg.ch

GitHub: github.com/guo-xiaoyi

LinkedIn: linkedin.com/in/xiaoyiguo00

My Research

News: I will work under the new SNSF project "Risk, Time, and Decision-Making" from October 2026. These projects will be (mostly) funded by this funding scheme.

Evolution of Reference Points over Time
Joint work with Matthias Weber, Enrico de Giorgi, and Andrija Lukovic

Distorted Update and Overthink
Single author
Overthinking in decision making processes is a common phenomenon that can lead to suboptimal outcomes. In this paper, I propose a novel model of distorted update to explain overthinking behavior under a stepwise reasoning framework. The model uses distorted beliefs that individuals use when filtering information.

Teaching

University of St. Gallen