He needs to identify perhaps with kin or family or peer group of some kind. 他需要和亲属或家人或某种同年龄的群体打成一片。
A Discussion of Emperor's Kin Group WEI HUO And The Metaphase Political In The West Han Dynasty 论卫霍外戚集团与西汉中期政治
The formal definition of altruism is given from the perspective of game theory, the mechanism of kin selection, reciprocity and group selection, as well as the role they played in the development of altruism. 本文首次从博弈论的角度给出了利他行为的定义,分析了亲缘选择机制、互惠利他机制和群体选择机制对利他行为的产生和发展的重要作用。