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Statistical efficiency of double-bounded dichotomous choice contingent valuation

The statistical efficiency of conventional dichotomous choice contingent valuation surveys can be improved by asking each respondent a second dichotomous choice question which depends on the response to the first question-if the first response is " yes," the second bid is some amount great...

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Bibliographic Details
Published in:American journal of agricultural economics 1991-11, Vol.73 (4), p.1255-1263
Main Authors: Hanemann, M. (University of California, Berkeley), Loomis, J, Kanninen, B
Format: Article
Language:English
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Summary:The statistical efficiency of conventional dichotomous choice contingent valuation surveys can be improved by asking each respondent a second dichotomous choice question which depends on the response to the first question-if the first response is " yes," the second bid is some amount greater than the first bid; while, if the first response is "no," the second bid is some amount smaller. This "double-bounded" approach is shown to be asymptotically more efficient than the conventional, "single-bounded" approach. Using data from a survey of Californians regarding their willingness to pay for wetlands in the San Joaquin Valley, we show that, in a finite sample, the gain in efficiency can be very substantial
ISSN:0002-9092
1467-8276
DOI:10.2307/1242453