Maritime shipping emits as much fine particulate matter as half of global road traffic. We are the first to measure the consequences of US maritime emissions standards on air quality, human health, racial exposure disparities, and behavior. The introduction of US maritime emissions control areas significantly decreased fine particulate matter, low birth weight, and infant mortality. Yet, only about half of the forecasted fine particulate matter abatement was achieved by the policy. We show evidence consistent with behavioral responses among ship operators, other polluters, and individuals that muted the policy's impact, but were not incorporated in ex ante models.
{"title":"Uncharted Waters: Effects of Maritime Emission Regulation.","authors":"Jamie Hansen-Lewis, Michelle Marcus","doi":"10.1257/pol.20220626","DOIUrl":"https://doi.org/10.1257/pol.20220626","url":null,"abstract":"<p><p>Maritime shipping emits as much fine particulate matter as half of global road traffic. We are the first to measure the consequences of US maritime emissions standards on air quality, human health, racial exposure disparities, and behavior. The introduction of US maritime emissions control areas significantly decreased fine particulate matter, low birth weight, and infant mortality. Yet, only about half of the forecasted fine particulate matter abatement was achieved by the policy. We show evidence consistent with behavioral responses among ship operators, other polluters, and individuals that muted the policy's impact, but were not incorporated in ex ante models.</p>","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"17 1","pages":"37-69"},"PeriodicalIF":5.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12040339/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144021972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We conducted a field experiment that randomized advertisements, advertisement content, and prices across 2,204 counties in the United States to study the impacts on online purchases of naloxone, an opioid overdose reversal drug. Advertising increased website users but only impacted purchases when combined with a price reduction. Messages emphasizing the discreet nature of online sales had no additional impact on purchases. Comparing counties with advertisements featuring a highly discounted price to those featuring the full price, we estimate a price elasticity of demand for online naloxone of -1.3. Price is a significant barrier to online purchases of this lifesaving medication.
{"title":"Price Sensitivity and Information Barriers to the Take-Up of Naloxone.","authors":"Mireille Jacobson, David Powell","doi":"10.1257/pol.20230135","DOIUrl":"10.1257/pol.20230135","url":null,"abstract":"<p><p>We conducted a field experiment that randomized advertisements, advertisement content, and prices across 2,204 counties in the United States to study the impacts on online purchases of naloxone, an opioid overdose reversal drug. Advertising increased website users but only impacted purchases when combined with a price reduction. Messages emphasizing the discreet nature of online sales had no additional impact on purchases. Comparing counties with advertisements featuring a highly discounted price to those featuring the full price, we estimate a price elasticity of demand for online naloxone of -1.3. Price is a significant barrier to online purchases of this lifesaving medication.</p>","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"16 4","pages":"463-490"},"PeriodicalIF":5.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12070450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144081321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We estimate the causal effects of drug copayment coupons, which reduce consumer cost-sharing for branded prescription drugs, on net-of-rebate price and quantities sold. Focusing on drugs without generic substitutes, we show that coupon introductions increase quantity sold by 23-25% for the commercial segment relative to Medicare Advantage, where coupons are banned. To quantify the resulting equilibrium price effects, we estimate a discrete choice model of demand for multiple sclerosis drugs and simulate a model of drug price negotiations. We estimate that net-of-rebate prices are 8% higher due to the availability of coupons for most of these drugs.
{"title":"How Do Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?","authors":"Leemore Dafny, Kate Ho, Edward Kong","doi":"10.1257/pol.20220355","DOIUrl":"10.1257/pol.20220355","url":null,"abstract":"<p><p>We estimate the causal effects of drug copayment coupons, which reduce consumer cost-sharing for branded prescription drugs, on net-of-rebate price and quantities sold. Focusing on drugs without generic substitutes, we show that coupon introductions increase quantity sold by 23-25% for the commercial segment relative to Medicare Advantage, where coupons are banned. To quantify the resulting equilibrium price effects, we estimate a discrete choice model of demand for multiple sclerosis drugs and simulate a model of drug price negotiations. We estimate that net-of-rebate prices are 8% higher due to the availability of coupons for most of these drugs.</p>","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"16 3","pages":"314-346"},"PeriodicalIF":5.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12494128/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bladimir Carrillo, Carlos Charris, Wilman Iglesias
During the South African apartheid, Black people were forced to move to homelands during the 1960s and 1970s, resulting in one of history’s largest segregation policy experiments. We examine how and why relocation to the homelands affected human capital attainment. Exploiting the staggered timing of homeland establishment in a cross-cohort identification strategy, we find that moving to the home-lands during childhood significantly reduces educational attainment, labor earnings, and employment rates in adulthood. The data suggest an important role for place effects. Moving to the homelands in childhood implies greater exposure to poorer neighborhoods, and it disproportionally reduces human capital attainment. (JEL I26, J15, J24, J31, N37, O15, R23)
{"title":"Moved to Poverty? A Legacy of the Apartheid Experiment in South Africa","authors":"Bladimir Carrillo, Carlos Charris, Wilman Iglesias","doi":"10.1257/pol.20210439","DOIUrl":"https://doi.org/10.1257/pol.20210439","url":null,"abstract":"During the South African apartheid, Black people were forced to move to homelands during the 1960s and 1970s, resulting in one of history’s largest segregation policy experiments. We examine how and why relocation to the homelands affected human capital attainment. Exploiting the staggered timing of homeland establishment in a cross-cohort identification strategy, we find that moving to the home-lands during childhood significantly reduces educational attainment, labor earnings, and employment rates in adulthood. The data suggest an important role for place effects. Moving to the homelands in childhood implies greater exposure to poorer neighborhoods, and it disproportionally reduces human capital attainment. (JEL I26, J15, J24, J31, N37, O15, R23)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"4 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135161304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper establishes that a targeted policy backfires because it reveals information about nontargeted units. In the world’s largest fishery, the regulator attempts to reduce the harvesting of juvenile fish by temporarily closing areas where the share of juvenile catch is high. By combining administrative microdata with biologically richer data from fishing firms, I isolate variation in closures that is due to the regulator’s lower-resolution data. I estimate substantial temporal and spatial spillovers from closures. Closures increase total juvenile catch by 48 percent because closure announcements implicitly signal that fishing before, just outside, and after closures is high productivity. (JEL D83, O13, Q21, Q22, Q28)
{"title":"Information and Spillovers from Targeting Policy in Peru’s Anchoveta Fishery","authors":"Gabriel Englander","doi":"10.1257/pol.20210812","DOIUrl":"https://doi.org/10.1257/pol.20210812","url":null,"abstract":"This paper establishes that a targeted policy backfires because it reveals information about nontargeted units. In the world’s largest fishery, the regulator attempts to reduce the harvesting of juvenile fish by temporarily closing areas where the share of juvenile catch is high. By combining administrative microdata with biologically richer data from fishing firms, I isolate variation in closures that is due to the regulator’s lower-resolution data. I estimate substantial temporal and spatial spillovers from closures. Closures increase total juvenile catch by 48 percent because closure announcements implicitly signal that fishing before, just outside, and after closures is high productivity. (JEL D83, O13, Q21, Q22, Q28)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"70 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135215825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
David N. Figlio, Cassandra M. D. Hart, Krzysztof Karbownik
Using a rich dataset that merges student-level school records with birth records, and leveraging a student fixed effects design, we explore how a Florida private school choice program affected public school students’ outcomes as the program matured and scaled up. We observe growing benefits (higher standardized test scores and lower absenteeism and suspension rates) to students attending public schools with more preprogram private school options as the program matured. Effects are particularly pronounced for lower-income students, but results are positive for more affluent students as well. Local and district-wide private school competition are both independently related to student outcomes. (JEL H75, I21, I22, I28)
{"title":"Effects of Maturing Private School Choice Programs on Public School Students","authors":"David N. Figlio, Cassandra M. D. Hart, Krzysztof Karbownik","doi":"10.1257/pol.20210710","DOIUrl":"https://doi.org/10.1257/pol.20210710","url":null,"abstract":"Using a rich dataset that merges student-level school records with birth records, and leveraging a student fixed effects design, we explore how a Florida private school choice program affected public school students’ outcomes as the program matured and scaled up. We observe growing benefits (higher standardized test scores and lower absenteeism and suspension rates) to students attending public schools with more preprogram private school options as the program matured. Effects are particularly pronounced for lower-income students, but results are positive for more affluent students as well. Local and district-wide private school competition are both independently related to student outcomes. (JEL H75, I21, I22, I28)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"3 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135216692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Given the critical role of renewable energies in current and future electricity markets, it is important to understand how they affect firms’ pricing incentives. We study whether the price-depressing effect of renewables depends on their degree of market price exposure. Paying renewables with fixed prices, rather than market-based prices, is more effective at curbing market power when the dominant firms own large shares of renewables, and vice versa. Our empirical short-lived changes to renewables regulation in the Spanish market and shows that switching from full-price exposure to fixed prices caused a 2–4 percent reduction in the average price-cost markup. (JEL L13, L94, L98, Q42, Q48)
{"title":"Market Power and Price Exposure: Learning from Changes in Renewable Energy Regulation","authors":"Natalia Fabra, None Imelda","doi":"10.1257/pol.20210221","DOIUrl":"https://doi.org/10.1257/pol.20210221","url":null,"abstract":"Given the critical role of renewable energies in current and future electricity markets, it is important to understand how they affect firms’ pricing incentives. We study whether the price-depressing effect of renewables depends on their degree of market price exposure. Paying renewables with fixed prices, rather than market-based prices, is more effective at curbing market power when the dominant firms own large shares of renewables, and vice versa. Our empirical short-lived changes to renewables regulation in the Spanish market and shows that switching from full-price exposure to fixed prices caused a 2–4 percent reduction in the average price-cost markup. (JEL L13, L94, L98, Q42, Q48)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"298 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135215861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Antoine Dechezleprêtre, Elias Einiö, Ralf Martin, Kieu-Trang Nguyen, John Van Reenen
We present causal evidence of R&D tax incentives’ positive impacts on a firm’s own innovation and that of its technological neighbors. Exploiting a change in size-based eligibility thresholds for R&D tax relief, we implement a Regression Discontinuity Design using administrative data. We find significant effects of tax relief on (quality-adjusted) patenting (and R&D) that persist up to seven years, and evidence of R&D spillovers on the innovation of technologically close firms. We can rule out elasticities of patenting with respect to R&D user cost of under 2 at the 5 percent level and show that our large effects are driven by financially constrained treated firms. (JEL D22, H25, H32, O31, O34)
{"title":"Do Tax Incentives Increase Firm Innovation? An RD Design for R&D, Patents, and Spillovers","authors":"Antoine Dechezleprêtre, Elias Einiö, Ralf Martin, Kieu-Trang Nguyen, John Van Reenen","doi":"10.1257/pol.20200739","DOIUrl":"https://doi.org/10.1257/pol.20200739","url":null,"abstract":"We present causal evidence of R&D tax incentives’ positive impacts on a firm’s own innovation and that of its technological neighbors. Exploiting a change in size-based eligibility thresholds for R&D tax relief, we implement a Regression Discontinuity Design using administrative data. We find significant effects of tax relief on (quality-adjusted) patenting (and R&D) that persist up to seven years, and evidence of R&D spillovers on the innovation of technologically close firms. We can rule out elasticities of patenting with respect to R&D user cost of under 2 at the 5 percent level and show that our large effects are driven by financially constrained treated firms. (JEL D22, H25, H32, O31, O34)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"52 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135217505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Saad Ahmad, Nuno Limão, Sarah Oliver, Serge Shikher
We estimate the impact of increased policy uncertainty from Brexit on UK trade in services. We apply an uncertainty-augmented gravity equation to UK services trade with the European Union at the industry level from 2016:I to 2018:IV. By exploiting the variation in the probability of Brexit from prediction markets interacted with a new trade policy risk measure across service industries, we identify a significant negative impact of the threat of Brexit on trade values and participation. The increased probability of Brexit in this period lowered services exports by at least 20 log points. (JEL F13, F14, F15)
{"title":"Brexit Uncertainty and Its (Dis)Service Effects","authors":"Saad Ahmad, Nuno Limão, Sarah Oliver, Serge Shikher","doi":"10.1257/pol.20200808","DOIUrl":"https://doi.org/10.1257/pol.20200808","url":null,"abstract":"We estimate the impact of increased policy uncertainty from Brexit on UK trade in services. We apply an uncertainty-augmented gravity equation to UK services trade with the European Union at the industry level from 2016:I to 2018:IV. By exploiting the variation in the probability of Brexit from prediction markets interacted with a new trade policy risk measure across service industries, we identify a significant negative impact of the threat of Brexit on trade values and participation. The increased probability of Brexit in this period lowered services exports by at least 20 log points. (JEL F13, F14, F15)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"40 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We test whether age discrimination rises during recessions using two complementary analyses. Confidential EEOC microdata reveal that age-related firing and hiring charges rise by 3.3 percent and 1.6 percent, respectively, for each percentage point increase in a state-industry’s monthly unemployment. Though the opportunity cost of filing falls, the fraction of meritorious claims increases—a sufficient condition for rising discrimination under plausible assumptions. Second, we repurpose data from hiring correspondence studies conducted across different cities and time periods during the recovery from the Great Recession. Each percentage point increase in local unemployment reduces the callback rate for older versus younger women by 15 percent. (JEL E32, J14, J16, J23, J71, M51)
{"title":"Age Discrimination across the Business Cycle","authors":"Gordon B. Dahl, Matthew Knepper","doi":"10.1257/pol.20210169","DOIUrl":"https://doi.org/10.1257/pol.20210169","url":null,"abstract":"We test whether age discrimination rises during recessions using two complementary analyses. Confidential EEOC microdata reveal that age-related firing and hiring charges rise by 3.3 percent and 1.6 percent, respectively, for each percentage point increase in a state-industry’s monthly unemployment. Though the opportunity cost of filing falls, the fraction of meritorious claims increases—a sufficient condition for rising discrimination under plausible assumptions. Second, we repurpose data from hiring correspondence studies conducted across different cities and time periods during the recovery from the Great Recession. Each percentage point increase in local unemployment reduces the callback rate for older versus younger women by 15 percent. (JEL E32, J14, J16, J23, J71, M51)","PeriodicalId":48093,"journal":{"name":"American Economic Journal-Economic Policy","volume":"62 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135217739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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