Economic Analysis of Biases in the Stated Preference Data

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  • 表明選好法におけるバイアスの経済分析
  • ヒョウメイ センコウホウ ニ オケル バイアス ノ ケイザイ ブンセキ

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Abstract

<p>The stated preference approach uses survey questions to elicit people’s preferences for public goods. It is able to capture both use and nonuse values, and it is the most widely used approach for estimating nonuse values. However, there is a risk that the stated data may be biased by the questionnaire design. This paper provides theoretical models for biases in stated preference data using game theoretical approach. It analyzes the following biasesi 1) the strategic bias, which arises due to respondent’s strategic behavior, 2) the hypothetical bias, which occurs when the payment is hypothetical, 3) the payment vehicle bias, which arises when the payment methods effect the respondent’s answer, and 4) effects of the protest no answer, which happens when the respondent refuses to state a bid for reasons associated with the process of valuation.</p>

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