Alessandro Tarozzi, Ricardo Maertens, Kazi Matin Ahmed, Alexander van Geen
{"title":"Demand for Information on Environmental Health Risk, Mode of Delivery, and Behavioral Change: Evidence from Sonargaon, Bangladesh.","authors":"Alessandro Tarozzi, Ricardo Maertens, Kazi Matin Ahmed, Alexander van Geen","doi":"10.1093/wber/lhaa009","DOIUrl":null,"url":null,"abstract":"<p><p>Millions of villagers in Bangladesh are exposed to arsenic by drinking contaminated water from private wells. Testing for arsenic can encourage switching from unsafe wells to safer sources. This study describes results from a cluster randomized controlled trial conducted in 112 villages in Bangladesh to evaluate the effectiveness of different test selling schemes at inducing switching from unsafe wells. At a price of about US0.60, only one in four households purchased a test. Sales were not increased by informal inter-household agreements to share water from wells found to be safe, or by visual reminders of well status in the form of metal placards mounted on the well pump. However, switching away from unsafe wells almost doubled in response to agreements or placards relative to the one in three proportion of households that switched away from an unsafe well with simple individual sales.</p>","PeriodicalId":51420,"journal":{"name":"World Bank Economic Review","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2020-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8331265/pdf/lhaa009.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"World Bank Economic Review","FirstCategoryId":"96","ListUrlMain":"https://doi.org/10.1093/wber/lhaa009","RegionNum":3,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2021/10/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"BUSINESS, FINANCE","Score":null,"Total":0}
引用次数: 0
Abstract
Millions of villagers in Bangladesh are exposed to arsenic by drinking contaminated water from private wells. Testing for arsenic can encourage switching from unsafe wells to safer sources. This study describes results from a cluster randomized controlled trial conducted in 112 villages in Bangladesh to evaluate the effectiveness of different test selling schemes at inducing switching from unsafe wells. At a price of about US0.60, only one in four households purchased a test. Sales were not increased by informal inter-household agreements to share water from wells found to be safe, or by visual reminders of well status in the form of metal placards mounted on the well pump. However, switching away from unsafe wells almost doubled in response to agreements or placards relative to the one in three proportion of households that switched away from an unsafe well with simple individual sales.
期刊介绍：
The World Bank Economic Review is the most widely read scholarly economic journal in the world and is freely distributed to more than 9,500 subscribers in non-OECD countries. It is the only journal of its kind that specializes in quantitative development policy analysis. Subject to strict refereeing, articles examine policy choices and therefore emphasize policy relevance rather than theory or methodology. Readers include economists and other social scientists in government, business, international agencies, universities, and research institutions. The WBER seeks to provide the most current and best research in the field of economic development.
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