Environmental and Resource Economics Review (자원ㆍ환경경제연구)

Korean Resource Economics Association (한국자원경제학회)
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A Comparison of Parametric and Non-parametric Approaches Dealing with Zero Responses in CVM Research

조건부 가치측정법에서 영(0)의 응답처리를 위한 모수적 추정법과 비모수적 추정법의 비교연구

  • Lee, Joosuk (Division of Economics and Commerce, Hoseo University) ;
  • Choi, Eun-Chul (Department of Economics, Korea University)
  • 이주석 (호서대학교 경제통상학부) ;
  • 최은철 (고려대학교 경제학과)
  • Received : 2012.10.29
  • Accepted : 2013.06.05
  • Published : 2013.06.30
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Abstract

There has been some debates about zero willingness to pay in contingent valuation method research. Therefore, this paper tries to estimate and compare the results of various models to handle zero willingness to pay responses. For this purpose, we have employed parametric estimation such as the mixed model and the spike model, as well as non-parametric estimations. As a result, these models derived WTP estimate different from conventional model, but they also show some weakness. Therefore, in future research, more conservative estimate of the model should be to use rather than specific model.

조건부 가치측정법 연구에서 제시금액에 대한 지불의사가 없다는 영(0)의 지불의사 비중이 높을 경우 영의 지불의사를 밝히는 응답 자료들을 어떻게 처리해야 하는가를 두고 논란이 있다. 이에 본 연구에서는 이산화탄소 저감정책에 대한 설문조사결과를 활용하여 보다 합리적으로 영의 지불의사를 밝히는 응답 자료들을 처리할 수 있는 모형들을 비교 분석함으로써 학술적 시사점을 제공하고자 한다. 이를 위하여 본 연구에서는 스파이크모형을 포함한 혼합모형 등 모수적 추정법 뿐만 아니라 다양한 비모수적 추정법의 추정결과를 비교분석하고자 하였다. 분석결과, 모형에 따라서 다른 값들이 도출되었으며, 각각의 모형들의 한계점도 확인할 수 있었다. 이러한 점을 볼 때, 향후 CVM 연구에서는 특정 방법론을 이용하는 것 보다는 보다 보수적인 추정치를 제공하는 방법론을 이용하는 것이 적절한 것으로 판단된다.

Keywords

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