[We] administered testosterone to men; instead of sharing money, they become selfish. Interestingly, high testosterone males are also more likely to use their own money to punish others for being selfish.
Paul J. ZakOxytocin infusion increases generosity in unilateral monetary transfers by 80 percent [and] increases donations to charity by 50 percent.
Paul J. ZakLike nature itself, modern economic life is driven by relentless competition and unbridled selfishness. Or is it?
Paul J. Zak