Prosocial behavior leads to happiness in a small-scale rural society
Journal of Experimental Psychology General (2015) - Comment
pubmed: 26030168  doi: 10.1037/xge0000082  issn: 1939-2222  issn: 0096-3445 

Lara B. Aknin, Tanya Broesch, J. Kiley Hamlin, Julia W. Van De Vondervoort