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Review of Economic Studies Vol. 84 No. 2 2016

Sellers with Misspecified Models

Kristóf Madarász1; Andrea Prat2,3

1 London School of Economics and Political Science · 2 Lahore School of Economics · 3 Columbia University

open access

Abstract

Principals often operate on misspecified models of their agents’ preferences. When preferences are such that non-local incentive constraints may bind in the optimum, even slight misspecification of the preferences can lead to large and non-vanishing losses. Instead, we propose a two-step scheme whereby the principal: (1) identifies the model-optimal menu; and (2) modifies prices by offering to share with the agent a fixed proportion of the profit she would receive if an item were sold at the model-optimal price. We show that her loss is bounded and vanishes smoothly as the model converges to the truth. Finally, two-step mechanisms without a sharing rule like (2) will not yield a valid approximation.

DOI
10.1093/restud/rdw030
Volume
84
Issue
2
Pages
rdw030
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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