作者：Mayzlin, Dina; Dover, Yaniv; Chevalier, Judith
作者单位：University of Southern California; Dartmouth College; Yale University
摘要：Firms' incentives to manufacture biased user reviews impede review usefulness. We examine the differences in reviews for a given hotel between two sites: Expedia.com (only a customer can post a review) and TripAdvisor.com (anyone can post). We argue that the net gains from promotional reviewing are highest for independent hotels with single-unit owners and lowest for branded chain hotels with multiunit owners. We demonstrate that the hotel neighbors of hotels with a high incentive to fake have...
作者：Chambers, Christopher P.; Echenique, Federico; Shmaya, Eran
作者单位：University of California System; University of California San Diego; California Institute of Technology; Northwestern University; Tel Aviv University
摘要：We define the empirical content of an economic theory as the least restrictive observationally equivalent theory. We show that the empirical content of a theory is captured by a certain kind of axiomatization, with axioms that are universal negations of conjunctions of atomic formulae.
