Testing willingness to pay elicitation mechanisms in the field: Evidence from Uganda
在乌干达农村实地测试了BDM机制的三种变体，发现参与者理解度高，86%的人对诱导价值凭证出价最优，表明理解与便利性之间的权衡较小。
Researchers frequently use variants of the Becker–DeGroot–Marschak (BDM) mechanism to elicit willingness to pay (WTP). These variants involve numerous incentive-irrelevant design choices, some of which carry advantages for implementation but may deteriorate participant comprehension or trust in the mechanism, which are well-known problems with the BDM. We highlight three such features and test them in the field in rural Uganda, a relevant population for many recent applications. Comprehension is very high, and 86 percent of participants bid optimally for an induced-value voucher, with little variation across treatments. This gives confidence for similar applications, and suggests the comprehension-expediency trade-off is mild.