1. Adolphs, R. (ed.) Special issue on cognitive neuroscience of social behavior. Neuropsychologia 41, 117 (2003).
2. Harmon-Jones, E. & Devine, T. (eds) Special issue on social neuroscience. J. Pers. Soc. Psychol. (in the press).
3. Cacioppo, J. T. et al. (eds) Foundations in Social Neuroscience (MIT Press, Cambridge, Massachusetts, 2001).
4. Heatherton, T. F. & Macrae, C. N. Social Cognitive Neuroscience: A Reader (Blackwell, Cambridge, Massachusetts, 2003).
5. Trivers, R. The evolution of reciprocal altruism. Q. Rev. Biol. 46, 35–57 (1971).