http://www.psmag.com/magazines/magazine-feature-story-magazines/joe-henrich-weird-ultimatum-game-shaking-up-psychology-economics-53135/
http://www.psmag.com/magazines/magazine-feature-story-magazines/joe-henrich-weird-ultimatum-game-shaking-up-psychology-economics-53135/
http://trove.com/me/content/f4YWT?chid=154443&utm_source=editorial&utm_medium=social&utm_campaign=srfan