Hello, my name is Jiayin Zhai and I am a Ph.D. candidate in the Department of Economics at the University of California, Los Angeles. I am on the job market for 2025-26.
My research interests are in microeconomic theory, particularly in information design, social learning and industry organization.
Download my CV here. You can reach me at ✉️ jiayinz06@ucla.edu.
The Optimal Level of Consultation (Job Market Paper)
Abstract: This paper studies how an information seller optimally manages information quality to maximize revenue from a client who purchases costly consultation before making an irreversible decision. I analyze this problem using a continuous time principal-agent model where the agent learns about a binary state through a drift--diffusion process whose precision is chosen by the principal. I find that in order to maximize revenue, the principal provides the worst information to the agent who’s the most uncertain about which action to take, i.e. when the prior is near indifference between actions. By offering worse signals, the principal prolongs engagement and increases revenue. This prediction can be tested in many empirical settings where experts or digital platforms supply tailored information to users who hold heterogeneous priors.
Learning From Your Neighbors
Evolving Social Norms on Networks
Course Instructor
ECON 101: Microeconomic Theory - 2024 Summer (Rating: 8.25/9.00)
Teaching Assistant
ECON 201B: 1st-year Ph.D. Game Theory
2022 Winter (9.00/9.00)
ECON 106I: Organizational Economics
2024 Fall(8.40/9.00); 2024 Winter (8.25/9.00)
ECON 106G: Introduction to Game Theory
2024 Spring
ECON 101: Microeconomic Theory
2022 Fall(8.30/9.00); 2022 Winter (8.77/9.00)
ECON 103: Introduction to Econometrics
2022 Summer(9.00/9.00); 2023 Fall (8.40/9.00); 2025 Winter(8.00/9.00); 2025 Spring (8.50/9.00); 2025 Summer(8.43/9.00)
ECON 41: Probability and Statistics
2021 Spring(8.40/9.00); 2021 Fall (8.25/9.00); 2022 Spring(8.40/9.00)