The Biology of Ethics

The Biology of Ethics - The Chronicle Review - The Chronicle of Higher Education: "Churchland, professor emerita of philosophy at the University of California at San Diego, has been best known for her work on the nature of consciousness. But now, with a new book, Braintrust: What Neuroscience Tells Us About Morality (Princeton University Press), she is taking her perspective into fresh terrain: ethics. And the story she tells about morality is, as you'd expect, heavily biological, emphasizing the role of the peptide oxytocin, as well as related neurochemicals.

Oxytocin's primary purpose appears to be in solidifying the bond between mother and infant, but Churchland argues—drawing on the work of biologists—that there are significant spillover effects: Bonds of empathy lubricated by oxytocin expand to include, first, more distant kin and then other members of one's in-group. (Another neurochemical, aregenine vasopressin, plays a related role, as do endogenous opiates, which reinforce the appeal of cooperation by making it feel good.)"