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Mitigating Hypothetical Bias: Evidence on the Effects of Correctives from a Large Field Study

机译:减轻假设性偏见:来自大范围研究的关于矫正效果的证据

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摘要

The overestimation of willingness-to-pay (WTP) in hypothetical responses is a well-known finding in the literature. Various techniques have been proposed to remove or, at least, reduce this bias. Using about 30,000 responses on WTP for a variety of power mixes from a panel of 6500 German households and the fixed-effects estimator to control for unobserved heterogeneity, this article simultaneously explores the effects of two common ex-ante approaches-cheap talk and consequential script-and the ex-post certainty approach to calibrating hypothetical WTP responses. Based on a switching regression model that accounts for the potential endogeneity of respondent certainty, we find evidence for a lower WTP among those respondents who classify themselves as definitely certain about their answers. Although neither cheap talk nor the consequential-script corrective reduce WTP estimates, receiving either of these scripts increases the probability that respondents indicate definite certainty about their WTP bids.
机译:假设反应中对支付意愿(WTP)的高估是文献中众所周知的发现。已经提出了各种技术来消除或至少减小该偏差。本文使用来自6500个德国家庭的面板上约30,000种不同功率组合的WTP响应以及固定效应估算器来控制未观察到的异质性,同时探讨了两种常见的事前方法(便宜的谈话和相应的脚本)的影响。 -和事后确定性方法来校准假设的WTP响应。基于考虑了被访者确定性的潜在内生性的转换回归模型,我们发现在将自己归类为对他们的回答绝对确定的那些被访者中,WTP较低。尽管廉价讨论和结果脚本纠正都不能降低WTP估算值,但是接收这两个脚本中的任何一个都会增加受访者表示对其WTP出价具有确定性的可能性。

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  • 来源
    《Environmental & Resource Economics》 |2017年第3期|777-796|共20页
  • 作者单位

    RWI Leibniz Inst Wirtschaftsforsch, Hohenzollernstr 1-3, D-45128 Essen, Germany;

    RWI Leibniz Inst Wirtschaftsforsch, Hohenzollernstr 1-3, D-45128 Essen, Germany|Ruhr Univ Bochum, Bochum, Germany;

    RWI Leibniz Inst Wirtschaftsforsch, Hohenzollernstr 1-3, D-45128 Essen, Germany|Jacobs Univ Bremen, Bremen, Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Willingness-to-pay; Cheap talk; Certainty approach;

    机译:付款意愿;便宜的谈话;确定性方法;

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