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) [full draft]
Abstract: This paper studies how an information seller optimally manages information precision to maximize revenue from a consumer who pays to learn before taking an irreversible action. The key insight is that the seller provides the least informative signals when the consumer's belief is close to indifference, thereby prolonging engagement and increasing rents. This behavior generates a U-shaped relationship between optimal precision and the consumer’s prior belief, and this result is robust to alternative cost structures. When consumers hold heterogeneous priors, standard screening becomes infeasible, inducing the seller to offer a single pooling contract. The paper also develops an empirical framework to test whether sellers adjust information quality to extract rents from consumers with heterogeneous priors. The results show that information distortions may arise from the seller’s strategic need to manage the consumer's attention, introducing a new mechanism to the literature on dynamic information provision and advisory markets.
Experimentation with Asymmetric Observation
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)