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Evolution of households’ responses to the groundwater arsenic crisis in Bangladesh: information on environmental health risks can have increasing behavioral impact over time

机译:家庭对孟加拉国地下水砷危机的反应演变

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摘要

A national campaign of well testing through 2003 enabled households in rural Bangladesh to switch, at least for drinking water, from high-arsenic wells to neighboring lower arsenic wells. We study the well-switching dynamics over time by re-interviewing, in 2008, a randomly selected subset of households in the Araihazar region who had been interviewed in 2005. Contrary to concerns that the impact of arsenic information on switching behavior would erode over time, we find that not only was 2003–2005 switching highly persistent but also new switching by 2008 doubled the share of households at unsafe wells who had switched. The passage of time also had a cost: 22 per cent of households did not recall test results by 2008. The loss of arsenic knowledge led to staying at unsafe wells and switching from safe wells. Our results support ongoing well testing for arsenic to reinforce this beneficial information.
机译:到2003年,全国性的试井运动使孟加拉国农村地区的家庭至少从饮用水上的高砷井转向附近的较低砷井。我们通过在2008年对Araihazar地区随机选择的一部分家庭进行了重新访谈来研究随时间变化的井动力,这些家庭在2005年接受了访谈。相反,人们担心砷信息对切换行为的影响会随着时间的流逝而减弱。 ,我们发现,不仅2003-2005年的转换非常持久,而且到2008年的新转换,使已经转换的不安全井中家庭的比例翻了一番。时间的流逝也要付出代价:到2008年,有22%的家庭没有召回测试结果。砷知识的流失导致他们呆在不安全的井中,并从安全的井中撤出。我们的结果支持正在进行的砷测试,以加强这种有益的信息。

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