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개방형과 폐쇄형질문에 의한 Contingent Valuation 의 순경제적 가치평가에 대한 비모수적검정 (非母數的檢定) : 무주리조트 스키장의 사례
한상열,최관 ( Sang Yoel Han,Kwan Choi ),Joe P . Colletti 한국산림과학회 1997 한국산림과학회지 Vol.86 No.1
The contingent valuation method(CVM) has been used to evaluate the economic value of nonmarket goods such as forest recreation. There are two commonly used CVM questionnaire formats: open-ended and closed-ended. This study evaluates the net economic value associated with day use downhill skiing, using CVM. A random, on-site survey of skiers in Muju, Korea generated the value estimates. In this paper a nonparametric test is introduced to find whether the difference between value estimates from open-ended and closed-ended formats are significantly different because the distributions of WTPs are non-normally distributed. The results show that the net economic benefits of a skier in Muju varies from ₩15.131 to ₩25,332. The closed-ended values were 1.15 to 1.67 times as large as the open-ended values, depending on the model specifications. In nonparametric test the mean WTPs of the open-ended and close-ended applications are significantly different. Its reason may be that closed-ended can be more reducing the incentive for strategic behavior than open-ended question. However, we cannot conclude that the closed-ended method is superior to the open-ended method.