The Willingness to Pay—Willingness to Accept Gap, the “Endowment Effect,” Subject Misconceptions, and Experimental Procedures for Eliciting Valuations: Reply
回应Isoni等人对Plott和Zeiler（2005）研究结果的质疑，通过数据检验表明所有马克杯数据均拒绝禀赋效应理论，并指出彩票差距源于对不确定性的不稳定态度和信念变化。
Isoni, Loomes, and Sugden (2011) assert that Plott and Zeiler (2005) reported inaccurate results. Placing ILS's selective quotes into context demonstrates otherwise. Additionally, examining the data closely yields three conclusions. First, all mug data reject endowment effect theory. Second, lottery gaps are associated with unstable attitudes toward uncertainty, a finding consistent with PZ's (2005) lottery data description, explicit warnings about procedure limitations and the data supplement, which reports the lottery data and cautions. Third, lottery outcome beliefs are influenced by whether WTP or WTA is reported, suggesting that changing beliefs, as opposed to the shape of preferences, produce lottery gaps.