Smartphones can be perceived as a part of users' human selves and extend their identity in various ways. This study aimed to validate the Chinese version of the Smartphone Self-Extension scale in a sample of 1,022 university students. The confirmatory factor analysis (CFA) was employed to examine the validity of the scale. The CFA results confirmed a three-factor, instead of a two-factor, structure of the scale, lending empirical evidence to the tripartite conceptualization of smartphone self-extension. Measurement invariance of the scale was established. Participants showing more smartphone addiction and higher frequency of smartphone use experienced more smartphone self-extension. Gender and smartphone addiction levels were associated with varying degrees of anthropomorphic and ontological self-extension. This is the first study to validate the Chinese version of the Smartphone Self-Extension scale among university students. The scale has been demonstrated to be a reliable and valid measure for smartphone self-extension to be used in educational settings.

智能手机可以被视为用户人类自我的一部分，并以各种方式扩展他们的身份。本研究旨在以 1,022 名大学生为样本，验证中文版智能手机自我延伸量表。采用验证性因素分析（CFA）来检验量表的效度。 CFA 结果证实了量表的三因素结构，而不是两因素结构，为智能手机自我扩展的三方概念化提供了经验证据。建立了量表的测量不变性。表现出更多智能手机成瘾和更高频率使用智能手机的参与者经历了更多的智能手机自我延伸。性别和智能手机成瘾程度与不同程度的拟人化和本体论自我延伸相关。这是第一个在大学生中验证中文版智能手机自我延伸量表的研究。该量表已被证明是在教育环境中使用智能手机自我扩展的可靠且有效的衡量标准。