我们都知道,人在做过决定之后不仅会倾向于夸大其益处,还会夸大他所拒绝的选择的不利之处。密歇根大学的斯派克·里要看看洗手是否会影响到人证明自己的选择是正确的过程。他首先让40名学生按照喜爱程度将10张CD排名,然后又让他们从排在第五和第六位的CD中任选一张并可收为己有。之后他让其中一半学生使用一种洗手液洗手并评价其质量,而另一半被测者仅靠观察来评估该洗手液的质量。最后,全部学生被要求再一次将10张CD排名。 We all know that after people make decisions, they not only tend to exaggerate their benefits, but also exaggerate the disadvantages of the choices they have rejected. Spike Lee of the University of Michigan wants to see if washing hands will affect the process by which people prove that their choice is correct. He first asked 40 students to rank 10 CDs according to their preference, and then let them select one of the 5th and 6th ranked CDs and take them for themselves. He then asked half of the students to use a hand sanitizer to wash their hands and evaluate their quality, while the other half only evaluated the quality of the hand sanitizer by observation. In the end, all students were asked to rank 10 CDs again.