WWU Münster, Germany.
J Anxiety Disord. 2010 Aug;24(6):596-605. doi: 10.1016/j.janxdis.2010.03.020. Epub 2010 Apr 4.
The Social Interaction and Anxiety Scale (SIAS) is widely used to assess social interaction anxiety. Yet its dimensional structure is still not well-defined. Especially, the conceptual pertinence of three negatively keyed items has been challenged. In this study, dimensionality of the answers of a student sample to a German SIAS version was first analyzed exploratorily. Subsequently, we tested confirmatorily several measurement models specifying different SIAS dimensions, and investigated how these relate to extraversion. The most reasonable model was cross-validated relying on data from healthy controls and social phobia sufferers. All analyses involved methods suited for an adequate handling of ordinal data. The findings confirm that three negatively keyed items are dubious indicators of social interaction anxiety. Thus, only the remaining 17 items should be used for this purpose in future studies. Analyses of their psychometric properties show, in addition, that they apparently tap three different facets of social interaction anxiety.
社会互动焦虑量表 (SIAS) 被广泛用于评估社交互动焦虑。然而，其维度结构仍未得到很好的定义。特别是，三个负面关键项目的概念相关性一直受到质疑。在这项研究中，首先对学生样本对德语 SIAS 版本的答案的维度结构进行了探索性分析。随后，我们验证性地测试了几个指定不同 SIAS 维度的测量模型，并研究了这些模型如何与外向性相关。最合理的模型依赖于健康对照组和社交恐惧症患者的数据进行交叉验证。所有分析都涉及到适合处理有序数据的方法。研究结果证实，三个负面关键项目是社交互动焦虑的可疑指标。因此，在未来的研究中，仅应使用其余的 17 个项目来测量社交互动焦虑。对其心理测量特性的分析还表明，它们显然可以反映社交互动焦虑的三个不同方面。
