REFERENCES
- Batson, C. D., & Coke, J. S. (1981). Empathy: A source of altruistic motivation for helping? In J. P. Rushton & R. M. Sorrentino (Eds.), Altruism and helping behavior (pp. 167–187). Hillsdale, NJ: Lawrence Erlbaum Associates.
- Crocker, J., & Canevello, A. (2011). Egosystem and ecosystem: Motivational perspectives on caregiving. In S. E. Brown, M. Brown, & L. A. Penner (Eds.), Moving beyond self-interest: Perspectives from evolutionary biology, neuroscience, and the social sciences (pp. 211–223). New York, NY: Oxford University Press.
- Crockett, M. J., Clark, L., Hauser, M. D., & Robbins, T. W. (2010). Serotonin selectively influences moral judgment and behavior through effects on harm aversion. Proceedings of the National Academy of Sciences, 107(40), 17433–17438.
- Dawkins, R. (1976). The selfish gene. New York, NY: Oxford University Press.
- Eisenberg, N. (1986). Altruistic emotion, cognition, and behavior. Hillsdale, NJ: Lawrence Erlbaum Associates.
- Hamilton, W. D. (1964). The genetical evolution of social behaviour. Journal of Theoretical Biology, 7(1), 1–52.
- Hu, X., Lipsky, R. H., Zhu, G., Akhtar, L. A., Taubman, J., Greenberg, B. D., … Kennedy, J. L. (2006). Serotonin transporter promoter gain-of-function genotypes are linked to obsessive-compulsive disorder. American Journal of Human Genetics, 78(5), 815.
- Mann, J. J., Huang, Y., Underwood, M. D., Kassir, S. A., Oppenheim, S., Kelly, T. M., … Arango, V. (2000). A serotonin transporter gene promoter polymorphism (5-HTTLPR) and prefrontal cortical binding in major depression and suicide. Archives of General Psychiatry, 57(8), 729.
- Pickett, C. L., & Gardner, W. L. (2005). The social monitoring system: Enhanced sensitivity to social cues as an adaptive response to social exclusion. In K. D. Williams, J. P. Forgas, & W. von Hippel (Eds.), The social outcast: Ostracism, social exclusion, rejection, and bullying (pp. 213–226). New York, NY: Psychology Press.
- Ratner, K. G., & Kubota, J. T. (2012). Genetic contributions to intergroup responses: A cautionary perspective. Frontiers in Human Neuroscience, 6.
- Schwartz, S. H., & Howard, J. A. (1984). Internalized values as motivators of altruism. In E. Staub, D. Bar-Tal, J. Karylowski, & J. Reykowski (Eds.), Development and maintenance of prosocial behavior: International perspectives on positive morality (pp. 229–253). New York, NY: Plenum Press.
- Stein, M. B., & Stein, D. J. (2008). Social anxiety disorder. Lancet, 371(9618), 1115–1125.
- Stoltenberg, S. F., Christ, C. C., & Carlo, G. (2013). Afraid to help: Social anxiety partially mediates the association between 5-HTTLPR triallelic genotype and prosocial behavior. Social Neuroscience.
- Trivers, R. L. (1971). The evolution of reciprocal altruism. Quarterly Review of Biology, 46(1), 35–57.
- Way, B. M., & Gurbaxani, B. M. (2008). A genetics primer for social health research. Social and Personality Psychology Compass, 2(2), 785–816.
- Way, B. M., & Taylor, S. E. (2010). Social influences on health: Is serotonin a critical mediator? Psychosomatic Medicine, 72(2), 107–112.
- Wendland, J., Martin, B., Kruse, M., Lesch, K., & Murphy, D. (2006). Simultaneous genotyping of four functional loci of human SLC6A4, with a reappraisal of 5-HTTLPR and rs25531. Molecular Psychiatry, 11(3), 224–226.