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Why do some nonprofits signal their respect for accountability via unilateral website disclosures? We develop an Accountability Index to examine the websites of 200 U.S. nonprofits ranked in the Chronicle of Philanthropy’s 2010 “Philanthropy 400.” Our intuition is that nonprofits recognize...
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This is an online appendix to Lacetera, N., Macis, M., and Slonim, R., 2013: “Rewarding Volunteers? A Field Experiment“ (Management Science, forthcoming). It contains the following materials: (1) Additional Details of the Experimental Design (pp. i-iii), and (2) Additional Analyses (pp....
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Demonstrating compelling causal evidence of the existence and strength of peer to peer influence has become the holy grail of modern research in online social networks. In these networks, it has been consistently demonstrated that user characteristics and behavior tend to cluster both in space...
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We evaluate the effects of an online self-assessment tool on teachers' competencies and beliefs about ICT in education. The causal impact of the tool is evaluated through a randomized encouragement design, involving 7,391 lower secondary teachers across 11 European countries. Short-run impact...
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The aim of this paper is to study the empirical phenomenon of rating bubbles, i.e. clustering on extremely positive values in e-commerce platforms and rating web sites. By means of a field experiment that exogenously manipulates prior ratings for a hotel in an important Italian tourism...
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This paper empirically investigates how marketers can retarget consumers who have searched online but did not purchase, based on their search behaviors. To infer the relationship between search activities and preferences, we estimate a structural search model that characterizes the consumer...
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