Test‐Retest Reliability of the Contingent Valuation Method: A Comparison of General Population and Visitor Responses
通过对一般居民和游客在九个月后重新调查，发现条件价值评估法测得的支付意愿在统计上稳定，重测相关性显著，且两次回答无显著差异。
Abstract 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.