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Christensen, Else Gry Bro; Nafziger, Julia (2016): Packaging of sin goods - Commitment or exploitation? In: Journal of Economic Behavior & Organization, Vol. 122: pp. 62-74
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We consider the shopping and consumption decision of an individual with a self-control problem. The consumer believes that restricting the consumption of a sinful product (such as chips) is in his long-run interest. But when facing the actual decision he is tempted to overeat. We ask how firms react to such self-control problems, and possibly exploit them, by offering different package sizes. In a competitive market, either one or three package sizes are offered. In contrast to common intuition, the large, and not the small package might be a commitment device. The latter may serve to exploit the naive consumer. (C) 2015 Elsevier B.V. All rights reserved.