And which changes individuals share tell us how closely or distantly related they are.

个体共有的变化告诉我们他们与我们的亲缘关系有多近或多远。

Observing groups of undergraduate students, psychologists at the University of Sussex noticed differences in behavior when subjects perceived themselves as individuals sharing only physical space with others, as opposed to sharing some sort of social identity.

苏塞克斯大学的心理学家们对一群大学生进行了观察，发现了受试者在将自己看做个体、与他人只是共享物理空间时，和与他人共有某种社会认同时的行为差异。