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作者：Mysliwski, Mateusz; Sanches, Fabio Miessi; Silva Junior, Daniel; Srisuma, Sorawoot
作者单位：Norwegian School of Economics (NHH); Getulio Vargas Foundation; City St Georges, University of London; National University of Singapore
摘要：We propose a dynamic oligopoly pricing model, in which consumers' choices exhibit inertia and firms face costly price adjustments. The primitives of the model are estimated using scanner data from the UK butter and margarine industry. We evaluate the effects of frictions on price dynamics, profits and consumer welfare. We find that price adjustment costs are substantial and represent between 24%-34% of net margins. Our model predicts that the absence of these costs reduces persistence in price...
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作者：Sevuk, Baris
作者单位：University of Bologna
摘要：Fumagalli and Motta (The Economic Journal, 2008) argued that competition among downstream buyers limits the ability of a dominant upstream firm to deter entry by a more efficient competitor. This comment demonstrates that the impact of downstream competition is, in fact, more complex. In particular, competition can motivate buyers to favour the incumbent due to a 'raising rivals' cost' effect.
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作者：Kerwin, Jason T.
作者单位：University of Washington; University of Washington Seattle; IZA Institute Labor Economics
摘要：This paper shows that responses to disease risks can be 'fatalistic': higher risk beliefs can lead to more risk-taking rather than less. Intuitively, this can occur because high risk beliefs raise not only the chance of contracting the disease (which raises the marginal cost of risk-taking), but also the perceived chance that you are already infected (which lowers the marginal cost). I test for fatalism by randomly providing information about the true (low) average risk of HIV transmission in ...
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作者：Dillon, Brian; Aker, Jenny C.; Blumenstock, Joshua E.
作者单位：Cornell University; University of California System; University of California Berkeley
摘要：We study the impact of a low-cost intervention to reduce information frictions in rural markets by randomly assigning small and medium enterprises in Tanzania to be listed in a telephone directory. The listed firms expand their communication networks, increase sales and make greater use of mobile money, with positive spillovers to firms in the same village. Estimated effects are larger and more statistically precise for firms that are more productive at baseline, consistent with consumers seek...
