Mind the Gap: Stated versus Revealed Donations and the Differential Role of Behavioral Factors
通过对比陈述性捐赠意愿与实际捐赠行为，发现行为因素（如捐赠带来的温暖感和对他人行为的预期）会显著扩大假设偏差，为改进条件价值评估方法提供参考。
This paper uses a contingent valuation study and an actual donation request to assess the impact of behavioral factors on hypothetical bias in stated willingness-to-pay estimates. Our findings indicate that both the number of respondents willing to donate and the amount they are willing to donate differ substantially between treatments. Behavioral factors play a substantial and significant role; in particular, the extent of warm glow derived from giving and expectations about other people’s behavior increase the extent of hypothetical bias in stated willingness-to-pay estimates. We suggest ways in which this may be incorporated in future contingent valuation study design. <i></i>