The answer is evolutionary psychology as this theory is the
one responsible of having to explain the evolution of an individual in terms of
their mind and their behavior in which it involves their psychological traits.
In the statement above, evolutionary psychology predicts that a person is more altruistic
towards relatives than close friends for this theory explains the psychological
behavior of an individual and how his or her mind affects his or her way of
behaving towards the society or towards other people around him or her. It
explains why a person is much closer to his or her friends than of his or her
relatives.
