Better knowledge need not affect behavior: a randomized evaluation of the demand for lottery tickets in rural Thailand
在泰国农村随机告知农户彩票真实中奖概率，发现知识提升后，农户购买彩票的意愿并未显著改变。
Many households in developing countries spend substantial amounts on lottery tickets but have only poor knowledge about the properties of the game and hold upwardly biased beliefs on the prospects of winning. To test whether more accurate knowledge reduces lottery participation, households in rural Thailand were informed, in a randomized intervention, on the actual probability distribution of the Thai Government Lottery. This indeed led to a better knowledge about the Thai Government Lottery in the treatment group. However, the improved knowledge did not (substantially) affect the willingness to pay for lottery tickets.