中文摘要：

相关研究表明，由于青少年在网络社交中能够获得他人的认可与支持，网络社交对网络成瘾具有显著的影响。自我价值定向理论认为自我价值是人们行为的终极理由，其中他人的认可与接纳、家庭社会经济地位都是自我价值的重要支撑。当青少年生活在高社会经济地位环境中，其自我价值可能越高，网络社交使用频率对网络成瘾的影响可能会减弱。我们从全国7个省收集了1216份青少年自评的网络社交使用频率、网络成瘾倾向以及父母自评的社会经济地位等指标的数据。结果表明：家庭社会经济地位调节着网络社交使用频率与网络成瘾倾向的关系；进一步的分析表明，在高社会经济地位的家庭中，青少年的网络社交使用频率对网络成瘾倾向的影响不显著，而在低社会经济地位的家庭中，青少年的网络社交使用频率对网络成瘾倾向的影响极其显著。结果支持了自我价值定向理论。

英文摘要：

Previous studies have demonstrated that the use of online social interaction （UOSI） is one of the most important factors affecting problematic Intemet use （PIU）. Online communication promotes intimate relationships, alleviates social anxiety, and strengthens interpersonal skills. However, some researchers also showed that many youths relied so much on the Internet that some even became addicted to it, particularly because of the anonymity and great accessibility that online communication provides. According to the Self-Worth Orientation Theory, the human is a reasonable and social （socialized） animal, committed to operate rationally in the world. An individual needs to construct and explain the system of his/her internal and external world, including the relationship between himself/herself and others, and the pursuit of the true self and the meaning of life. The essential assumption of this theory is that self-worth is the ultimate reason system of self-behavior and can be enhanced by internal and external psychological resources. The family social economic status （SES） is one of these supporting systems. Thus, based on the theory of Self-Worth Orientation, we hypothesized that, ira youth grew up in a high SES family, his/her self-worth might be more likely to be high, which could weaken his/her dependence on support from online sources and thereby contribute to the effect of UOSI on PIU. Conversely, if one came from a low SES family, his/her self- worth would be low and the acceptance and support from online interaction would be more tempted to make up for the lack of support for self-worth. Consequently, those from a low SES family youth would be more likely than their counterparts to get involved in Internet behavior and have stronger tendency to be addicted to it. In sum, the family SES may moderate the effect of UOSI on PIU. To explore this hypothesis, we adopted Young＇s Internet addiction diagnostic questionnaire, the preference for online social interaction scale, and the self-made fami