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作者：McCabe, Mark J.; Snyder, Christopher M.
作者单位：Boston University; University of Michigan System; University of Michigan; SKEMA Business School; Dartmouth College; National Bureau of Economic Research
摘要：Does online availability boost citations? Using a panel of citations to economics and business journals, we show that the enormous effects found in previous studies were an artifact of their failure to control for article quality, disappearing once fixed effects are added as controls. The absence of aggregate effects masks heterogeneity across platforms: JSTOR has a uniquely large effect, boosting citations around 10%. We examine other sources of heterogeneity, including whether JSTOR dispropo...
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作者：Milanovic, Branko
作者单位：University System of Maryland; University of Maryland College Park
摘要：Suppose that all people in the world are allocated only two characteristics over which they have (almost) no control: country of residence and income distribution within that country. Assume further that there is no migration. We show that more than one-half of variability in income of world population classified according to their household per capita in 1% income groups (by country) is accounted for by these two characteristics. The role of effort or luck cannot play a large role in explaini...
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作者：Penaranda, Francisco; Sentana, Enrique
摘要：Regression and SDF approaches with centered or uncentered moments and symmetric or asymmetric normalizations are commonly used to empirically evaluate linear factor pricing models. We show that unlike two-step or iterated GMM procedures, single-step estimators such as continuously updated GMM yield numerically identical risk prices, pricing errors, and overidentifying restrictions tests irrespective of the model validity and regardless of the factors being traded, or the use of excess or gross...
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作者：Cette, Gilbert; Dromel, Nicolas; Lecat, Remy; Paret, Anne-Charlotte
作者单位：European Central Bank; Bank of France; Aix-Marseille Universite; Aix-Marseille Universite; Centre National de la Recherche Scientifique (CNRS); Paris School of Economics
摘要：Short-term increasing returns to production factors are usually found in empirical studies. We argue they can be due to omitted variables, particularly the intensity of factor utilization. Thanks to original French firm-level data (1992-2008), we show how increasing returns to scale disappear when working time, capacity utilization rate, and, particularly, capital operating time are introduced in the production function.
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作者：Behaghel, Luc; Crepon, Bruno; Gurgand, Marc; Le Barbanchon, Thomas
作者单位：INRAE; Paris School of Economics; Institut Polytechnique de Paris; ENSAE Paris; Paris School of Economics; Centre National de la Recherche Scientifique (CNRS); Bocconi University; Bocconi University
摘要：We propose a novel selectivity correction procedure to deal with survey attrition in treatment effect models, at the crossroads of the Heckit model and the bounding approach of Lee (2009). As a substitute for the instrument needed in sample selectivity correction models, we use information on the number of prior calls made to each individual before obtaining a response to the survey. We obtain sharp bounds to the average treatment effect on the common support of responding individuals. Because...
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作者：Cook, C. Justin
作者单位：University of California System; University of California Merced
摘要：This paper empirically tests the association between genetically determined resistance to infectious disease and cross-country health differences. A country-level measure of genetic diversity for the system of genes associated with the recognition and disposal of foreign pathogens is constructed. Genetic diversity within this system has been shown to reduce the virulence and prevalence of infectious diseases and is hypothesized to have been naturally selected from historical exposure to infect...
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作者：Carlsson, Magnus; Dahl, Gordon B.; Oeckert, Bjoern; Rooth, Dan-Olof
作者单位：Linnaeus University; University of California System; University of California San Diego; Uppsala University
摘要：To identify the causal effect of schooling on cognitive skills, we exploit conditionally random variation in the date Swedish males take a battery of cognitive tests in preparation for military service. We find an extra ten days of school instruction raises scores on crystallized intelligence tests (synonyms and technical comprehension tests) by approximately 1% of a standard deviation, whereas extra nonschool days have almost no effect. In contrast, test scores on fluid intelligence tests (sp...
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作者：Sun, Yixiao; Kim, Min Seong
作者单位：University of California System; University of California San Diego; Toronto Metropolitan University
摘要：The paper develops an asymptotically valid F-test that is robust to spatial autocorrelation in a GMM framework. The validity of the F-test is established under mild conditions that can accommodate a wide range of spatial processes. The proposed F-test is very easy to implement, as critical values are from a standard F-distribution. The F-test achieves triple robustness: it is asymptotically valid regardless of the spatial autocorrelation, the sampling region, and the limiting behavior of the s...
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作者：Figlio, David N.; Schapiro, Morton O.; Soter, Kevin B.
作者单位：Northwestern University; National Bureau of Economic Research
摘要：This study makes use of detailed student-level data from eight cohorts of first-year students at Northwestern University to investigate the relative effects of tenure track/tenured versus contingent faculty on student learning. We focus on classes taken during a student's first term at Northwestern and employ an identification strategy in which we control for both student-level fixed effects and next-class-taken fixed effects to measure the degree to which contingent faculty contribute more or...
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作者：Ambrose, Brent W.; Coulson, N. Edward; Yoshida, Jiro
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Nevada System of Higher Education (NSHE); University of Nevada Las Vegas
摘要：We employ a weighted repeat rent estimator to construct quarterly indexes that expand the profession's ability to make cross-sectional comparisons of housing markets. Our analysis shows that there is considerable heterogeneity in the behavior of rents across cities over the 2000-2010 decade, but the number of cities and years for which nominal rents fell is substantial; rents fell in many cities following the onset of the housing crisis in 2007; and the repeat rent and Bureau of Labor Statisti...
