The Ponds Dilemma
研究了人们如何选择进入不同规模的竞赛池，发现高能力者不一定选择大池塘，且更公平的池塘会吸引更多低能力者，奖励变化可能产生反直觉效果。
Is it better to be a big fish in a small pond or a small fish in a big pond? To find out, we study self-selection into contests. Our simple model predicts that: 1) entry into the big pond–in terms of show-up fees, number or value of prizes–is non-monotonic in ability; 2) entry into the more meritocratic pond is likewise non-monotonic, exhibiting two interior extrema and disproportionately attracting very low ability types; and 3) changes in rewards can produce unexpected effects. E.g., higher show-up fees may lower entry, while higher prizes or more meritocracy may lower the average ability of entrants.