The Big Three Perfectionism Scale (BTPS) is one of commonly used measures for assessing individuals’ perfectionism. The main purpose of this current study was to assess the psychometric properties of the Big Three Perfectionism Scale (BTPS) within the framework of the Rasch model. The sample consisted of 502 adolescents (53% males and 47% females). This study revealed were several important findings. First, adolescents interpreted the categories of the rating scales of the BTPS as intended and items demonstrated good targeting with the operating ranges from − 4.79 to 4.47 logits for rigid perfectionism, from − 3.84 to 3.76 logits for self-critical perfectionism and from − 4.04 to 3.92 logits for narcissistic perfectionism. Second, rigid perfectionism, self-critical perfectionism and narcissistic perfectionism exhibited unidimensionally, providing justification for the use of summed scores for each scale. Third, the average item difficulty of facets was different within each scale, with the facets of self-worth contingencies, socially prescribed perfectionism and other-oriented perfectionism being more difficult to endorse in their belonging scale. Fourth, there were no DIF items across sex, suggesting that items in three scales functioned equally across boys and girls. Fifth, rigid perfectionism (r = 0.15) and self-critical perfectionism (r = 0.55) were positively associated with neuroticism, but self-critical perfectionism (r = − 0.24) and narcissistic perfectionism (r = − 0.29) were negatively related with agreeableness. Finally, sex moderated the associations between rigid perfectionism and neuroticism. In sum, the findings in this study enhance psychometric properties of the BTPS.

三巨头完美主义量表（BTPS）是评估个人完美主义的常用量表之一。本研究的主要目的是在 Rasch 模型框架内评估三大完美主义量表 (BTPS) 的心理测量特性。样本由 502 名青少年组成（53% 为男性，47% 为女性）。这项研究揭示了几个重要的发现。首先，青少年按照预期解释了 BTPS 评级量表的类别，并且项目表现出良好的针对性，其操作范围为 - 4.79 至 4.47 logits（严格完美主义）、- 3.84 至 3.76 logits（自我批评完美主义）和 - 4.04 至3.92 logits 表示自恋完美主义。其次，严格的完美主义、自我批评的完美主义和自恋的完美主义以单一维度表现出来，为每个量表的总分的使用提供了理由。第三，每个量表中各个方面的平均项目难度不同，自我价值偶然性、社会规定的完美主义和其他导向的完美主义方面在其归属量表中更难得到认可。第四，不同性别之间没有 DIF 项目，这表明三个量表中的项目对男孩和女孩的作用相同。第五，严格的完美主义（r  =0.15）和自我批评的完美主义（r  =0.55）与神经质呈正相关，但自我批评的完美主义（r  =−0.24）和自恋的完美主义（r  =−0.29）与宜人性呈负相关。 。最后，性调节了严格的完美主义和神经质之间的联系。总之，本研究的结果增强了 BTPS 的心理测量特性。