Social psychological research on the process of expansion and shrinking of self-others boundary

首先，运用经济学的方法论，我们试图建立一个模型来解释机构之间的社会依赖是如何广泛传播的。通过这种方法，揭示了一个初等线性代数模型可以通过我们与他人之间的互动关系来描述边界的变化。其次，分析了内群-外群语境的影响过程。通过调查和实验相结合的方法进行多阶段检验，揭示了群体内和群体外地位的变化性水平对群体内个体边界变化性的影响。第三，大规模调查的结果表明，在独立性和差异性两方面都高度认可自己的个体排斥他人的倾向较低。然后，纵向调查考察了自我-他者统一性的增加与自我和自我-他人关系评价之间的关系。结果表明，低自尊的人往往通过把高自尊的朋友纳入自己的圈子而经历抑郁。此外，研究还表明，自我与朋友之间同一性的增加降低了对交换支持互惠的敏感性。此外，为了探索网络传播的边界调节机制，通过问卷调查分析了手机短信交流的效果。结果表明，短信交流起着弱纽带的作用，并具有关系调节机制。

First, using a methodology of economics, we tried to make a model which can explain how social dependency among agencies spread widely. Through this approach, it was revealed that an elementary linear algebraic model can describe the change of the boundary through interactive relationship between ourselves and others. Second, the influence process of ingroup-outgroup context was analysed. Through multiphasic examination using methodology of surveys and experiments, it was revealed that the level of changeability of status of ingroup and outgroup affects changeability of boundary of individuals at ingroup. Third, the results of large-scale survey showed that individuals who recognize themselves highly in both independence and differentiation have a low tendency to exclude others.And then, a longitudinal survey examined the relationship between increment of self-other oneness and appraisal of self and self-other relationship. The result showed that low self-esteem people often experience depression through including high self-esteem friends into themselves. Furthermore, it was suggested that increment of oneness between self and friends decreases sensitivity to reciprocity of supports exchanged. Moreover, in order to explore the boundary regulation mechanism of cyber communication, the effects of exchange of short messages by a cellphone were analyzed through a questionnaire survey. Results,showed that the exchange of short messages functions as the weak ties, and has a relationship regulation mechanism.