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作者：Baye, Michael R.; Gao, Xiaxun; Morgan, John
作者单位：Indiana University System; Indiana University Bloomington; IU Kelley School of Business; University System of Ohio; Miami University; University of California System; University of California Berkeley
摘要：We study optimal fee setting decisions by a monopoly online platform connecting advertisers with potential buyers in two environments: a simple model that captures stylised features of advertising on search engines, social networks and advertisement-supported email; and a richer model that is more relevant for directed search at price comparison sites. While the platform can choose to charge for both impressions and clicks, we show that the platform maximises profits by using clickthrough fees...
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作者：Armstrong, Mark; Zhou, Jidong
作者单位：University of Oxford; New York University
摘要：We investigate how firms can become prominent and thereby influence the order in which consumers consider options. First, firms can affect sales efforts by means of commission payments, in which case the salesman steers consumers towards expensive products. Second, sellers can advertise prices on a price comparison website, so that consumers investigate the suitability of products in order of increasing price. Here, prices are lower when search costs are higher. Finally, consumers might first ...
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作者：Eugster, Beatrix; Lalive, Rafael; Steinhauer, Andreas; Zweimueller, Josef
作者单位：University of Lausanne; University of Lausanne; University of Zurich
摘要：Does culture shape the demand for social insurance against risks to health and work? We study this issue across language groups in Switzerland where a language border sharply separates social groups at identical actual levels of publicly provided social insurance. We find substantially stronger support for expansions of social insurance among residents of French, Italian or Romansh-speaking language border municipalities compared with their German-speaking neighbours in adjacent municipalities...
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作者：Chen, Yongmin; He, Chuan
作者单位：University of Colorado System; University of Colorado Boulder; University of Colorado System; University of Colorado Boulder
摘要：Paid placement, where advertisers bid payments to a search engine to have their products displayed prominently among the results of a keyword search, has emerged as a predominant form of advertising on the Internet. This article studies a model of product differentiation in which the auction of advertisement positions is embedded in a market game of consumer search. In equilibrium, more relevant sellers for a given keyword bid more and their paid placement by the search engine reveals informat...
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作者：Stutzer, Alois; Goette, Lorenz; Zehnder, Michael
作者单位：University of Basel; University of Lausanne
摘要：Assigning a subjective value to a contribution to a public good often requires reflection. For many reasons, this reflection may be put off, reinforcing the underprovision of public goods. We hypothesise that nudging individuals to reflect on whether to contribute to a public good leads to the formation of issue-specific altruistic preferences. The hypothesis is tested in a large-scale field experiment on blood donations. We find that an active-decision intervention substantially increases don...
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作者：Hoff, Karla; Kshetramade, Mayuresh; Fehr, Ernst
作者单位：University of Zurich; The World Bank
摘要：Well-functioning groups enforce social norms that restrain opportunism. We study how the assignment to the top or bottom of the caste system affects the altruistic punishment of norm violations. Individuals at the bottom of the hierarchy exhibit a much lower willingness to punish norm violations that hurt members of their own caste. We can rule out self-selection into castes and control for wealth, education and political experience. We thus plausibly identify the impact of caste status on alt...
