9Batson, D. , 1991, The Altruism Question: Toward a Social-psychological Answer, Hillsdale, NJ: Erlbaum.
10Batson, D. , 2009, "These things called empathy: eight related but distinct phenomenon", in The Social Neuroscience of Empathy, ed. by J. Decety and W. Ickes, Cambridge, MA: MIT Press.
