Abstract: Abstract Yi people deeply affected by Jiazhi group. Compared with Han people who have two tier group structure what are Chinese identity and Han ethnic identity. Yi people have three-tier group structure what are Chinese identity, Yi ethnic identity and Jiazhi identity. Previous studies found that the Yi people have a high identity of Chinese national identity and the ethnic identity. So, whether the Yi people’s unique Jiazhi identity also have a high level and have a positive impact on well-being. However, at present, the research on Jiazhi of Yi people mainly through interview method, field investigation method and the literature method and lacks quantitative research. So we introduce social identity theory of psychology to studying Jiazhi structure and we also revising the Jiazhi identity scale of Yi people according to the internal group identity scale in order to further explore the relationship between national identity and Jiazhi identity and find out how is it impact on Yi people’s well-being. In study one, according to Colin Wayne Leach ingroup identity scale, we revised the Jiazhi identity scale, and using it to measure Yi people’s Jiazhi identity level. We found that the questionnaire has a good degree of reliability and validity. In study two, we found that, firstly, the Yi people's Jiazhi have an important impact in daily life, Yi people have a higher Jiazhi identity（M=4.79，SD=1.16）. Secondly, we found that Yi people have a higher ethnic identity（M=4.00，SD=0.51）and Chinese nationality identity（M=3.98，SD=0.53）which is similar to the previous results. Thirdly, we found that Yi people are agree with their own ethnic culture（M=4.30，SD=0.616）and have a strong sense of belonging（M=4.47，SD=0.47）in their daily life. Then we also found that the well-being of the Yi people is in the middle upper level（M=3.29，SD=0.55）which is similar to the previous results. More specifically, the most satisfactory in terms of well-being is health satisfaction（M=3.80，SD=0.87）and relatively the lowest satisfactory is economy satisfaction Finally, we found that the ethnic identity of the Yi people has a regulatory role on well-being and Jiazhi identity. Yi people’s Jiazhi identity support for the sense of well-being and have a significant positive prediction on it. More specifically, a higher ethnic identity, means the Jiazhi identity has a stronger prediction of Yi people’s well-being. For national identity, In China, national identity includes the Chinese national identity and ethnic identity, in which the Chinese nation is the upper group, and the nation is the lower group, constitute a two-tier group structure. In the identity of the Yi people, in addition to both the identity of the ethnic, but also deeply affected by the impact of Jiazhi support. Compared with the Han people who have two tier group structure what are Chinese identity and Han ethnic identity. the Yi people have three-tier group structure what are Chinese identity, Yi ethnic identity and Jiazhi identity. Previous studies have found that the Yi people have a high identity of the Chinese national and the ethnic identity. So, whether the Yi people’s unique Jiazhi identity also has a high level and have a positive impact on well-being. However, at present, the research on Jiazhi of Yi people mainly through the interview method and the field investigation method and the literature and lacks the quantitative research. So we introduce the social identity theory of psychology to studying Jiazhi structure and we also revises the Jiazhi identity of the Yi people according to the internal group identity scale. In order to further explore the relationship between national identity and Jiazhi identity and find out how is it impact on Yi people’s well-being. In study one, according to Colin ingroup identity scale, we revised the Jiazhi identity scale, and using it to measure Yi people’s Jiazhi identity level. We found that the questionnaire has a good degree of reliability and validity. In study two, we found that, firstly, the Yi people's Jiazhi has an important impact in daily life, Yi people has a higher Jiazhi identity(M=4.79，SD=1.16). Secondly, we found that Yi people has a higher ethnic identity(M=4.00，SD=0.51) and Chinese nationality identity(M=3.98，SD=0.53) which is similar to the previous results. Thirdly, we found that Yi people are agree with their own ethnic culture(M=4.30，SD=0.616) and have a strong sense of belonging(M=4.47，SD=0.47) in their daily life. Then we also found that the well-being of the Yi people is in the middle upper level(M=3.29，SD=0.55) which is similar to the previous results. More specifically, the most satisfactory in terms of well-being is health satisfaction(M=3.80，SD=0.87) and relatively the lowest satisfactory is economy satisfaction. Finally, we found that the ethnic identity of the Yi people has a regulatory role on well-being and Jiazhi identity. Yi people’s Jiazhi identity support for the sense of well-being and have a significant positive prediction on it. More specifically, a higher ethnic identity, means the Jiazhi identity has a stronger prediction of Yi people’s well-being.

Key words: Yi people, Jiazhi, ingroup identity, well-being

摘要： 家支作为彝族特有的内群体，使得彝族具有中华民族、彝族和家支三层群体结构。关于彝族家支的研究先前主要通过访谈法、田野考察法、文献法等进行，缺乏对家支的量化研究。本研究基于心理学的社会认同理论，将家支作为一个独特的内群体结构进行量化研究，考察彝族家支认同对幸福感的影响。研究一修订了彝族家支认同问卷，结果显示该问卷具有较高的信效度。研究二发现，彝族的民族认同，家支认同和幸福感三者之间存在显著的相关，进一步分析发现彝族的民族认同在彝族家支认同和幸福感之间存在调节作用，民族认同水平越高，家支认同对幸福感有着更强的预测，影响也更大。彝族家支认同对于幸福感有显著的正向预测。

关键词: 彝族，家支，内群体认同，幸福感