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Kill Zone
Kamepalli, Sai Krishna; Rajan, Raghuram G.; Zingales, Luigi - 2022
We study why acquisitions of entrant firms by an incumbent can deter innovation and entry in the digital platform industry, where there are strong network externalities and some customers face switching costs. A high probability of an acquisition induces some potential early adopters to wait for...
Persistent link: https://www.econbiz.de/10013298326
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Intensive Math Instruction and Educational Attainment : Long-Run Impacts of Double-Dose Algebra
Cortes, Kalena E. - 2014
We study an intensive math instruction policy that assigned low-skilled 9th graders to an algebra course that doubled instructional time, altered peer composition and emphasized problem solving skills. A regression discontinuity design shows substantial positive impacts of double-dose algebra on...
Persistent link: https://www.econbiz.de/10013052505
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Curriculum and Ideology
Cantoni, Davide - 2014
, staggered introduction of the new curriculum across provinces allows us to identify the effects of the new educational content …. These changes were often effective: study under the new curriculum is robustly associated with changed views on political …
Persistent link: https://www.econbiz.de/10013054037
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The Impact of High School Curriculum on Confidence, Academic Success, and Mental and Physical Well-Being of University Students
Yu, Han - 2018
attitudes towards studying and learning. We exploit a curriculum reform in China, the implementation of which started in 2004 …This paper investigates the causal effect of high school curriculum on various student outcomes including academic … new curriculum pivoted away from the old lock-step course structure where all students took the same courses and only …
Persistent link: https://www.econbiz.de/10012919864
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Narrative Economics
Shiller, Robert J. - 2017
This address considers the epidemiology of narratives relevant to economic fluctuations. The human brain has always been highly tuned towards narratives, whether factual or not, to justify ongoing actions, even such basic actions as spending and investing. Stories motivate and connect activities...
Persistent link: https://www.econbiz.de/10012964904
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Is Bitcoin a Real Currency? An Economic Appraisal
Yermack, David - 2013
A bona fide currency functions as a medium of exchange, a store of value, and a unit of account, but bitcoin largely fails to satisfy these criteria. Bitcoin has achieved only scant consumer transaction volume, with an average well below one daily transaction for the few merchants who accept it....
Persistent link: https://www.econbiz.de/10013071510
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The Geographic Spread of Covid-19 Correlates with the Structure of Social Networks as Measured by Facebook
Kuchler, Theresa - 2020
We use aggregated data from Facebook to show that COVID-19 was more likely to spread between regions with stronger social network connections. Areas with more social ties to two early COVID-19 “hotspots” (Westchester County, NY, in the U.S. and Lodi province in Italy) generally had more...
Persistent link: https://www.econbiz.de/10012837185
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Measuring Social Connectedness
Bailey, Michael - 2017
We introduce a new measure of social connectedness between U.S. county-pairs, as well as between U.S. counties and foreign countries. Our measure, which we call the "Social Connectedness Index" (SCI), is based on the number of friendship links on Facebook, the world's largest online social...
Persistent link: https://www.econbiz.de/10012951350
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What Can We Learn from Euro-Dollar Tweets?
Gholampour, Vahid - 2017
We use 633 days of tweets about the Euro/dollar exchange rate to determine their information content and the profitability of trading based on Twitter Sentiment. We develop a detailed lexicon used by FX traders to translate verbal tweets into positive, negative and neutral opinions. The...
Persistent link: https://www.econbiz.de/10012959375
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Fake News and Advertising on Social Media : A Study of the Anti-Vaccination Movement
Chiou, Lesley - 2018
Online sources sometimes publish information that is false or intentionally misleading. We study the role of social networks and advertising on social networks in the dissemination of false news stories about childhood vaccines. We document that anti-vaccine Facebook groups disseminate false...
Persistent link: https://www.econbiz.de/10012908469