To explain competitive altruism, Roberts uses the example of preening among birds.

They seek to do moral genealogy by explaining altruism in terms of the utility of altruistic actions, which is subsequently forgotten as such actions become the norm.

Evolutionary scientists have developed a model to explain reciprocal altruism among closely related individuals.

He soon discovered that the only theories that explained altruism were bogus.

He attacked Cronin for explaining human altruism as natural!

Hamilton's insight was to show how kin selection could explain altruism and spite.

Perhaps you are wondering why fancy logic is needed to explain altruism.

In the 1960s W.D. Hamilton and others developed game theory approaches to explain altruism from an evolutionary perspective through kin selection.

He also introduced theories concerning group selection and kin selection to explain altruism.

Kin selection theory explains altruism in evolutionary perspective.