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 …

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 …