Consumer Search and the Uncertainty Effect

Heiko Karle, Heiner Schumacher and Rune Volund

No 15967, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: We consider a model of Bertrand competition where consumers are uncertain about the qualities and prices of firms' products. Consumers can inspect all products at zero cost. A share of consumers is expectation-based loss averse. For these consumers, a purchase plan, which involves buying products of varying quality and price with positive probability, creates scale-dependent disutility from gain-loss sensations. Even if their degree of loss aversion is modest, they may refrain from inspecting all products and choose an individual default that is first-order stochastically dominated. Firms' strategic behavior can exacerbate the scope for this "uncertainty effect", and sellers of inferior products may earn positive profits despite Bertrand competition. We find suggestive evidence for the predicted association between consumer behavior and loss aversion in new survey data.

Keywords: Consumer search; Competition; Loss aversion (search for similar items in EconPapers)
JEL-codes: D21 D83 L41 (search for similar items in EconPapers)
Date: 2021-03
New Economics Papers: this item is included in nep-com, nep-mic and nep-upt
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Working Paper: Consumer search and the uncertainty effect (2020)
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