Aknin L. B., Barrington-Leigh, C. P., Dunn, E. W., Helliwell, J. F., Burns, J., Biswas-Diener, R. & Norton, M. I., (2013). Prosocial spending and well-being: Cross-cultural evidence for a psychological universalJournal of Personality and Social Psychology, 104(4), 635-652:

Aknin L. B., Dunn, E. W., & Norton, M. I. (2012). Happiness runs in a circular motion: Evidence for a positive feedback loop between prosocial spending and happiness. Journal of Happiness Studies, 13, 347–355:

Aknin L. B., Hamlin J. K. & Dunn E. W., (2012). Giving Leads to Happiness in Young Children, PLoS ONE 7(6): e39211:

Christakis N. A. & Fowler J. H., (2008). Dynamic spread of happiness in a large social network: longitudinal analysis over 20 years in the Framingham Heart Study, BMJ 2008;337:a2338:

Christakis N. A. & Fowler J. H., (2010). Cooperative behavior cascades in human social networks, Proceedings of the National Academy of Sciences Mar 2010, 107 (12) 5334-5338; DOI:10.1073/pnas.0913149107:

Dunbar R., Spoors M. (1995). Social networks, support cliques and kinship. Human Nature, 6 (3), 273-90.

Harbaugh W.,  Mayr U., Burghart, D., (2007). Neural Responses to Taxation and Voluntary Giving Reveal Motives for Charitable Donations,  Science Journal, 316 (5831): 1622–1625:

Inagaki T. K., Haltom B., Eisenberger N. I., et al (2015). The Neurobiology of Giving Versus Receiving Support: The Role of Stress-Related and Social Reward–Related Neural Activity, Psychosomatic Medicine: May 2016 - Volume 78 - Issue 4 - p 443–453:

Khanna V., Sharma E., Chauhan S. &  Pragyendu (2017). Effects of Prosocial Behavior on Happiness and Well-Being, The International Journal of Indian Psychology Volume 4, Issue 2, No. 86, DIP: 18.01.031/20170402:

Lum T. Y., & Lightfoot E. (2005). The Effects of Volunteering on the Physical and Mental Health of Older PeopleResearch on Aging27(1), 31–55:

Nelson K., Cole, S. W., Layous, K. & Lyubomirsky S. (2016). Do Unto Others or Treat Yourself? The Effects of Prosocial and Self-Focused Behavior on Psychological Flourishing, American Psychological Association, 2016, Vol. 16, No. 6, 850 – 861:

Nelson-Coffey S. K., Fritz M. M., Lyubomirsky S. & Colec S. W.,(2017). Kindness in the blood: A randomized controlled trial of the gene regulatory impact of prosocial behaviour.

Pressman S. D., Kraft T. L. & Cross M. P (2015). It’s good to do good and receive good: The impact of a ‘pay it forward’ style kindness intervention on giver and receiver well-being, The Journal of Positive Psychology, 10:4, 293-302, DOI: 10.1080/17439760.2014.965269

Snippe E., Jeronimus B. F., aan het Rot M., Bos E. H., de Jonge P. & Wichers M, (2017). The reciprocity of prosocial behavior and positive affect in daily life. Journal of Personality. 86 (2): 139–146:

Whillans A. V., Dunn E. W., Sandstrom G. M., Dickerson S. S., Madden I. K., (2016). Is spending money on others good for your heart?,  American Psychological Association 2016, Vol. 35, No. 6, 574 –583: