有道关于交换咖啡和巧克力条的逻辑题，偶然发现经济学人上有篇类似文章，不过对于做题不知道有没有帮助。
http://www.economist.com/printedition/displayStory.cfm?Story_ID=2021010
Some recent work should at least help. It explores the “endowment effect”, one of the chief tenets of prospect theory. Put simply, this means that people place an extra value on things they already own. Think of a favourite sweater, or your house: would you swap either for something of equal market value? Over the past decade, prospect theorists have found support for the endowment effect in scores of experiments. In one of the best-known, researchers at Cornell University began by giving university students either a coffee mug or a chocolate bar, each with identical market values. First the experimenters confirmed that roughly half the students preferred each good. After the goodies were handed out, they let the students trade: those who had wanted mugs but got chocolate (or vice versa) could swap.With barely 10% of students opting to trade, the endowment effect seemed established (you would expect 50% to have swapped, given the random allocation of gifts). Even after a short time with things of little value, ownership had overwhelmed the students' prior tastes. Dozens of other tests have produced similar results, and have produced a wave of criticism of neoclassical economics.
The criticism has been taken seriously, as it should be: if the endowment effect is real, people's economic decisions are fundamentally different from what economists have assumed. The implications of this are profound. To take one example, the Coase theorem, which argues that initial allocations of wealth do not matter as long as markets allow people to trade their stakes—the rationale for government auctions of everything from radio spectrum to mobile-telephone licences—would no longer be valid. To take another, although economists have shown that you need only a few sharp traders for prices in financial (and other) markets to become efficient, the volume of trade with an endowment effect will be below what it might be without one.
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发表于 2016-10-8 01:35:23
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