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Based on experimental dictator games with probabilistic prospects, Brock, Lange, and Ozbay (2013) conclude that neither ex post nor ex ante comparisons can fully account for observed behavior. We argue that their conclusion that ex ante comparisons cannot explain the data is at best weakly supported by their results, and do so on three grounds: (i) the absence of significant differences between the most relevant treatments, (ii) the implicit assumption of subjects' risk neu trality, and (iii) the asymmetry of treatments regarding the disclosure of dictators' choice. (JEL C72, D63, D64, D81)

Attitudes towards uncertainty have been indicated to be highly context-dependent, and to be sensitive to the measurement technique employed. We present data collected in controlled experiments with 2939 subjects in 30 countries measuring uncertainty attitudes through incentivized measures as well as survey questions. Our data show clearly that measures correlate not only within decision context or measurements methods, but also across contexts and methods. This points to the existance of one underlying "risk preference", which influences attitudes independently of the measurement method or choice domain. We furthermore find that answers to a general survey question correlate with incentivized lottery choices in most countries. Much more surprisingly, incentivized and survey measures also correlate significantly between countries. This opens the possibility to conduct cultural comparisons on risk attitudes using survey instruments. (author's abstract)