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Reputation and adverse selection: theory and evidence from eBay
Author(s) -
Saeedi Maryam
Publication year - 2019
Publication title -
the rand journal of economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.687
H-Index - 108
eISSN - 1756-2171
pISSN - 0741-6261
DOI - 10.1111/1756-2171.12297
Subject(s) - unobservable , adverse selection , reputation , microeconomics , profit (economics) , quality (philosophy) , business , private information retrieval , economics , computer science , econometrics , social science , philosophy , computer security , epistemology , sociology
How can a marketplace introduce mechanisms to overcome inefficiencies caused by adverse selection? In this article, I use a unique data set that follows eBay sellers to show that reputation is a major determinant of price variations. I develop a model of sellers' dynamic behavior where sellers have heterogeneous qualities unobservable by buyers. Using reputation as a signal of quality, I structurally estimate the model to uncover buyers' utility and sellers' costs and underlying qualities. I show that removing the reputation mechanism increases low‐quality sellers' market share, lowers prices, and consequently reduces sellers' profit by 66% and consumer surplus by 35%.