Antitrust & Competition Policy Blog

Editor: D. Daniel Sokol
University of Florida
Levin College of Law

Monday, February 11, 2013

Price Discrimination with Private and Imperfect Information

Posted by D. Daniel Sokol

Rosa-Branca Esteves (Universidade do Minho - NIPE) explores Price Discrimination with Private and Imperfect Information.

ABSTRACT: This paper investigates the competitive and welfare effects of information accuracy improvements in markets where firms can price discriminate after observing a private and noisy signal about a consumer’s brand preference. It shows that firms charge more to customers they believe have a brand preference for them, and that this price has an inverted-U shaped relationship with the signal’s accuracy. In contrast, the price charged after a disloyal signal has been observed falls as the signal’s accuracy rises. While industry profit and overall welfare fall monotonically as price discrimination is based on increasingly more accurate information, the reverse happens to consumer surplus.

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