The problem is that in the example given, the two problems framed in term of loss and in term of gain are not equivalent. Depending on how much time the student

The problem is that in the example given, the two problems framed in term of loss and in term of gain are not equivalent. Depending on how much time the student has to consider the question, he might not see from: - If you choose Medicine A, 400,000 people will die. If you choose Medicine B, there is a 33.3% chance that no one will die and a 66.6% chance that 600,000 will die. That in the case of medecine B, there's a 66% that the result (600,000 people dying) is equivalent to the result of not taking any medicine. Whereas when the problem is framed in term of gain, it's quite clear by the phrasing "66.6% chance that no one will be saved.". That's the problem with this kind of questionnaire, and it's compounded by the fact that they do not provide the Korean/Japanese/French version of the questionnaire they used.