Shota Ichihashi
Senior Economist
- B.A. Keio University (Economics)
- M.A. University of Tokyo (Economics)
- Ph.D. Stanford University (Economics)
Bio
Shota is a Senior Economist. His research focuses on microeconomic theory, game theory, and the economics of the Internet. Most recently, he theoretically analyzes the economic impact of personal data sharing by consumers. His other works include auction theory and information disclosure theory.
Staff working papers
Dynamic Privacy Choices
Consumers often express concerns about lack of privacy, but they still give up a lot of data to digital platforms. This paper builds a dynamic game-theoretic model of data collection and privacy protection, which potentially explains consumers’ behaviour.Non-competing Data Intermediaries
I study a model of competing data intermediaries (e.g., online platforms and data brokers) that collect personal data from consumers and sell it to downstream firms.Online Privacy and Information Disclosure by Consumers
A consumer discloses information to a multi-product seller, which learns about the consumer’s preferences, sets prices, and makes product recommendations. While the consumer benefits from accurate product recommendations, the seller may use the information to price discriminate.Limiting Sender’s Information in Bayesian Persuasion
This paper studies how the outcome of Bayesian persuasion depends on a sender’s information. I study a game in which, prior to the sender’s information disclosure, the designer can restrict the most informative signal that the sender can generate.Journal publications
Other
Working papers
- "Natural Monopoly for Data Intermediaries," 2019
- "Consumer-Optimal Disclosure with Costly Information Acquisition," 2018
- "Online Privacy and Information Disclosure by Consumers," 2018
- "When to Hold an Auction?"
(with Isaias N. Chaves), 2018 - "Limiting Sender's Information in Bayesian Persuasion," 2017