Test-Retest Reliability of the Contingent Valuation Method: A Comparison of General Population and Visitor Responses
American Journal of Agricultural Economics, 1989, vol. 71, issue 1, 76-84
The reliability of the contingent valuation method is evaluated by resurveying the same general households and visitors nine months after their original survey. Test-retest correlations on willingness to pay are statistically significant and ranged from. 422 for the general population sample to. 782 for the visitor sample. Using a paired T-test, there was no statistical difference between an individual's first and second reported willingness to pay. Chow tests comparing the original and resurvey willingness-to-pay functions showed no statistical difference at the .01 level. Reported willingness to pay is reasonably stable over the time period surveyed.
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Persistent link: https://EconPapers.repec.org/RePEc:oup:ajagec:v:71:y:1989:i:1:p:76-84.
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