Dunn et al., 2008: Spending given money on other people increased happiness among college students over one day
Dunn, E. W., Aknin, L. B., & Norton, M. I. (2008). Spending money on others promotes happiness. Science, 319(5870), 1687-1688.Download PDF
Giving people on a college campus $5 or $20 and asking them to spend it on other people increased happiness at the end of the day.