Rodebaugh Thomas L, Woods Carol M, Heimberg Richard G
Washington University in Saint Louis, USA.
Behav Ther. 2007 Jun;38(2):192-206. doi: 10.1016/j.beth.2006.08.001. Epub 2007 Feb 21.
Although well-used and empirically supported, the Social Interaction Anxiety Scale (SIAS) has a questionable factor structure and includes reverse-scored items with questionable utility. Here, using samples of undergraduates and a sample of clients with social anxiety disorder, we extend previous work that opened the question of whether the reverse-scored items belong on the scale. First, we successfully confirmed the factor structure obtained in previous samples. Second, we found the reverse-scored items to show consistently weaker relationships with a variety of comparison measures. Third, we demonstrated that removing the reverse-scored questions generally helps rather than hinders the psychometric performance of the SIAS total score. Fourth, we found that the reverse-scored items show a strong relationship with the normal personality characteristic of extraversion, suggesting that the reverse-scored items may primarily assess extraversion. Given the above results, we suggest investigators consider performing data analyses using only the straightforwardly worded items of the SIAS.
尽管社交互动焦虑量表（SIAS）使用广泛且得到实证支持，但其因子结构存在问题，还包含效用存疑的反向计分项目。在此，我们以大学生样本和社交焦虑障碍患者样本为研究对象，扩展了先前关于反向计分项目是否应纳入该量表的研究。首先，我们成功验证了先前样本中得到的因子结构。其次，我们发现反向计分项目与各种比较指标的关系始终较弱。第三，我们证明去除反向计分问题通常有助于而非阻碍SIAS总分的心理测量性能。第四，我们发现反向计分项目与外向性这一正常人格特征有很强的关联，表明反向计分项目可能主要评估外向性。鉴于上述结果，我们建议研究人员考虑仅使用SIAS中措辞直接的项目进行数据分析。
