 In recent decades there has been an enormous amount of discussion of altruism in psychology, sociology, economics, anthropology and primatology. Much of the work in psychology, including all of the work recounted in  section 5,  has adopted the “standard account” of altruism. But some psychologists, and many researchers in other disciplines, have something very different in mind. In a useful review of recent discussions of altruism, Clavien and Chapuisat lament the fact that 