 A number of experimental studies in the 1960s and 1970s subsequently confirmed the robustness of the effects uncovered by Allais. Slovic &amp; Tversky (1974), for example, report that 17 out of 29 (59%) of subjects in their study exhibit Allais preferences in their investigation of the Common Consequence problem. See MacCrimmon &amp; Larson (1979) for a helpful summary of this and other early work and further data of their own.