Professor of Economics, Business and Public Policy
Sarin Chair in Strategy and Leadership
I study e-commerce with a focus on consumer and firm behavior in online markets.
I was on leave from Berkeley first at eBay (2011-13) and later at Amazon (2016-17)
where I led teams of economists to apply economic research tools to a variety of product and business applications. These included creating better matches of buyers and
sellers, reducing market frictions by increasing trust and safety, understanding the underlying value of different advertising and
marketing strategies, and exploring the market benefits of different pricing and fee
structures. Aside from the economics of e-commerce, my main fields of interest
are the economics of incentives and organizations, industrial organization, and microeconomics.
In the past I explored topics such as firm reputation as a valuable, tradable asset; the effects of contract
design and organizational form on firm behavior with applications to outsourcing
and privatization; public and private sector procurement and award mechanisms;
and the determinants of trust.
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