1. Richard A. Friedman. The Feel-Good Gene. The New York Times. 20152. Hughes, James (2004). Citizen Cyborg: Why Democratic Societies Must Respond to the Redesigned Human of the Future. Westview Press. ISBN 0-8133-4198-1.3. Diener, E.; Emmons, R. A.; Larsen, R. J.; Griffin, S. (1985). 'The satisfaction with life scale'. Journal of Personality Assessment. 49 (1): 71–75.4. Wilson, Timothy D.; Meyers, Jay; Gilbert, Daniel T. (December 2003). 'How Happy Was I, Anyway?' A Retrospective Impact Bias'. Social Cognition. 21 (6): 421–446.5. Shenk, Joshua Wolf (1 June 2009). 'What Makes Us Happy?' – via The Atlantic.6. Vaillant, GE (2012), Triumphs of Experience: The Men of the Harvard Grant Study, Belknap Press, ISBN 0-674-05982-47. Fowler, JH; Dawes, CT; Christakis, NA (2009). 'Model of genetic variation in human social networks' (PDF). Proceedings of the National Academy of Sciences. 106 (6): 1720–1724.8. Sherry Turkle. Alone Together: Why We Expect More from Technology and Less from Each Other. New York: Basic Books, January 2011.9. Kraut, Robert E.; Rice, Ronald E.; Cool, Colleen; Fish, Robert S. (1998). 'Varieties of Social Influence: The Role of Utility and Norms in the Success of a New Communication Medium'. Organization Science. 9 (4): 437–453.