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Priority Roads : The Political Economy of Africa's Interior-to-Coast Roads
Bonfatti, Roberto - 2019
Africa’s interior-to-coast roads are well suited to export natural resources, but not to support regional trade. Are they the optimal response to geography and comparative advantage, or the result of suboptimal political distortions? We investigate the political determinants of road paving in...
Persistent link: https://www.econbiz.de/10012892107
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Optimization Over Graphs
Kwon, Suehyun - 2019
This paper defines isomorphism for network formation that is not mathematically isomorphic. Once the pattern of network formation is characterized, one can test for (i) location fixed effects, (ii) heterogeneity, (iii) private information allowing for long-term contracts. The paper provides...
Persistent link: https://www.econbiz.de/10012892085
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Small Group Instruction to Improve Student Performance in Mathematics in Early Grades : Results from a Randomized Field Experiment
Bonesrønning, Hans; Finseraas, Henning; Hardoy, Inés; … - 2021
years. The intervention includes students aged 7-9 and consists of pulling students from their regular mathematics classes … into small, homogenous groups for mathematics instruction for 3 to 4 hours per week, for two periods of 4-6 weeks per … their performance in mathematics by .16 standard deviations at the end of the school year and by .06 standard deviations in …
Persistent link: https://www.econbiz.de/10013312078
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Optimally Controlling an Epidemic
Gonzalez-Eiras, Martín; Niepelt, Dirk - 2021
We propose a flexible model of infectious dynamics with a single endogenous state variable and economic choices. We characterize equilibrium, optimal outcomes, static and dynamic externalities, and prove the following: (i) A lockdown generically is followed by policies to stimulate activity....
Persistent link: https://www.econbiz.de/10013314771
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Heterogeneity in high math achievement across schools: Evidence from the American Mathematics Competition
Ellison, Glenn; Swanson, Ashley - 2012
achievement. Data from the American Mathematics Competitions is used to produce counts of high-scoring students from more than two …
Persistent link: https://www.econbiz.de/10010283594
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Impatience and Uncertainty : Experimental Decisions Predict Adolescents' Field Behavior
Sutter, Matthias - 2011
We study risk attitudes, ambiguity attitudes, and time preferences of 661 children and adolescents, aged ten to eighteen years, in an incentivized experiment and relate experimental choices to field behavior. Experimental measures of impatience are found to be significant predictors of...
Persistent link: https://www.econbiz.de/10013118350
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Workforce or Workfare?
Brett, Craig - 2011
This article explores the use of workfare as part of an optimal tax mix when labor supply responses are along the extensive margin. Particular attention is paid to the interaction between workfare and an earned income tax credit, two policies that are designed to provide additional incentives...
Persistent link: https://www.econbiz.de/10013124395
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Fixed-Term and Permanent Employment Contracts : Theory and Evidence
Cao, Shutao - 2014
This paper constructs a theory of the coexistence of fixed-term and permanent employment contracts in an environment …
Persistent link: https://www.econbiz.de/10013069444
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The (Structural) Gravity of Epidemics
Cuñat, Alejandro - 2020
Epidemiological models assume gravity-like interactions of individuals across space without microfoundations. We combine a simple epidemiological frame-work with a dynamic model of individual location choice. The model predicts that flows of people across space obey a structural gravity...
Persistent link: https://www.econbiz.de/10012833717
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The Tradeoff between Indirect Network Effects and Product Differentiation in a Decarbonized Transport Market
Andreassen, Gøril L. - 2020
What factors determine whether it is optimal with one or more technologies in a decarbonized road transport sector, and what policies should governments choose? We investigate these questions theoretically and numerically through a static, partial equilibrium model for the road transport market....
Persistent link: https://www.econbiz.de/10012833722