By Michael Bond
The New Scientist
Originally published March 9, 2016
Here is an excerpt:
A quick look at leading evolutionary anthropologist Michael Tomasello’s A Natural History of Human Morality will tell you that this flux in social norms is all of a piece with group psychology. Interests and identities within groups often seem to hold sway over those of individuals. This can seem irrational, but in the context of our evolutionary history it is anything but. Tomasello aims to describe not only how these “us and them” attitudes evolved, but also how they came to define our sense of right and wrong.
The article is here.