To understand the "pure" incentives of altruism, economic laboratory research on humans almost always forbids … communication between subjects. In reality, however, altruism usually requires interaction between givers and receivers, which … altruism are built on human sociality. We experimentally examine communication in which one subject allocates $10 between …

prevent safe inferences about differences in social preferences. We present new evidence from a natural field experiment in …

experiment during the Salvation Army's annual campaign. The familiar bell-ringers were placed at one or both of two main … awareness of the empathy-altruism link, rather than pernicious social costs of fundraising …

intergenerational altruism. Thus, immigrants may be self-selected on fertility. Soviet Jews who migrate to Israel despite high migration …. Selection on altruism can explain why historically immigrant-absorbing countries like the U.S. have higher fertility than other …. Selection on altruism also implies that immigrant-absorbing regions will grow faster, or have higher per capita income, or both …