Oslo University Hospital, Oslo, Norway.
University of Oslo, Oslo, Norway.
Assessment. 2021 Jul;28(5):1320-1333. doi: 10.1177/1073191120967972. Epub 2020 Nov 6.
The current study aims to examine the psychometric properties of the Structured Clinical Interview for the Alternative Model for Personality Disorders Module I (SCID-5-AMPD-I) assessing the Level of Personality Functioning Scale (LPFS) in a heterogeneous sample of 282 nonpsychotic patients. Latent variable models were used to investigate the dimensionality of the LPFS. The results indicate that the LPFS, as assessed by the SCID-5-AMPD-I, can be considered as a unidimensional construct that can be measured reliably across a wide range of the latent trait. Threshold parameters for the 12 indicators of the LPFS increased gradually over the latent scale, indicating that the five LPFS levels were ordered as predicted by the model. In general, the increase of threshold parameters was relatively small for the shift from Level 2 to Level 3. A better distinction among the different severity levels might be obtained by fine-tuning the interview guidelines or the Level 2 indicators themselves.
本研究旨在考察用于评估人格障碍诊断访谈表第五版替代模型模块一（SCID-5-AMPD-I）人格功能水平量表（LPFS）在 282 名非精神病患者异质样本中的心理测量特性。使用潜在变量模型来探讨 LPFS 的维度结构。结果表明，SCID-5-AMPD-I 评估的 LPFS 可以被视为一个单维结构，可以在广泛的潜在特质范围内可靠地测量。LPFS 的 12 个指标的阈值参数在潜在量表上逐渐增加，表明 LPFS 的五个水平按照模型预测的顺序排列。总体而言，从第 2 级到第 3 级的阈值参数增加相对较小。通过微调访谈指南或第 2 级指标本身，可以更好地区分不同的严重程度水平。
