limitations of the frequently used specification test that distinguishes between the standard models of pure and impure altruism … impure altruism compared with pure altruism, we show that, in general, it can be either more or less. Second, we propose a … heterogeneity based on park and volunteer hour types, are theoretically consistent with the mainstay model of impure altruism …

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 …

concern for other people's welfare (altruism) in the process of making high profits. Even with few truly altruistic firms, an …

teenagers do not. The evidence is strongly consistent with the child-cycle pattern. Thus, while altruism drives some giving, the …

of human motivation--our findings suggest that the reward experienced from helping others may be deeply ingrained in …