Demand cross elasticity without substitutability: An experiment

Luigi Luini and Pierluigi Sabbatini

Journal of Behavioral and Experimental Economics (formerly The Journal of Socio-Economics), 2012, vol. 41, issue 2, 255-265

Abstract: We study a market in which goods are produced under low marginal costs with a poor degree of substitutability among products. In this environment we ran an experiment to explain why prices are interdependent even when preferences are independent. We compare our results to previous theoretical and laboratory experimental literature on price fairness. We find that even in the absence of interaction among subjects, price fairness/unfairness does play a major role in the decision to accept or reject a deal. Subjects tend to be more resistant to a price increase and reject a deal when the preferred product is not referenced to price increases of not substitute products, if these products are considered to be a benchmark for fair conduct. Thus demand cross elasticity can arise between products that are not substitutes. This result has important implications for antitrust policy. In delineating a market perimeter, fairness concerns suggest that products that are similar but not interchangeable should be included in the relevant antitrust market.

Keywords: Demand cross elasticity; Price reference; Unfairness; Antitrust relevant market (search for similar items in EconPapers)
JEL-codes: C93 D12 K21 (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:eee:soceco:v:41:y:2012:i:2:p:255-265

DOI: 10.1016/j.socec.2011.12.011

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