Children's altruism in public good and dictator experiments
研究了6-12岁儿童利他行为和搭便车行为的发展，发现儿童利他水平与成人相似，但重复实验对儿童影响不同；年幼儿童贡献下降，年长儿童类似成人；群体归属感与更高贡献相关。
We examine the development of altruistic and free-riding behavior in 6-12 year-old children. We find that the level of altruistic behavior in children is similar to that of adults but that repetition has a different effect. Younger children's contributions of older children, like those of adults, tend to decline. Group attachment is associated with higher contributions. Contributions in a subsequent dictator experiment are correlated with first-round contributions in the public good experiment, but are not strongly correlated with last-round contributions.