Current evolutionary models state that human altruism evolved through the selective (cultural or biological) extinction of groups in inter-group conflicts.

Others, such as Vrel, are fascinated with human altruism and develop concern for others instead of pure self-interest.

In particular, "the benefits of human altruism are to be seen as coming directly from reciprocity - not indirectly through non-altruistic group benefits".

Do we really want to live in a world where comercial interests outlaw common human altruism?

In the years since these experiments, the study of human altruism has developed into a whole new branch of psychology, now known as prosocial behavior.

But for Peter, the Klikiss machines were such an enigma that applying standards of human altruism was not appropriate.

He attacked Cronin for explaining human altruism as natural!

Never mind that most human altruism does not operate this way.

The book of insolence finds its targets in such concepts as a purposeful God, a benevolent and orderly universe, human altruism, the existence of free will.

Her award winning work on altruism is widely recognized as a classic analysis of human altruism and its political significance.