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Wednesday, February 24, 2021
12:00 PM - 1:00 PM
Online Event

Ulric B. and Evelyn L. Bray Social Sciences Seminar

Background Risk and Small-Stakes Risk Aversion
Luciano Pomatto, Assistant Professor of Economics, Caltech,

Abstract: We show that under plausible levels of background risk, no theory of choice under risk---such as expected utility theory, prospect theory, or rank dependent utility---can simultaneously satisfy the following three economic postulates: (i) Decision-makers are risk-averse over small gambles, (ii) they respect stochastic dominance, and (iii) they account for background risk.

Written with Xiaosheng Mu, Philipp Strack, and Omer Tamuz.

This seminar was originally scheduled for Wednesday, January 13.

How to view the seminar:
Sign up for a free account, and tune in on Wednesdays at noon pacific time on You will be able to ask questions on the twitch chat.

For more information, please contact Letty Diaz by email at