Carleton R Nicholas, Norton M A Peter J, Asmundson Gordon J G
Anxiety and Illness Behaviours Laboratory, University of Regina, Regina, Sask., Canada S4S 0A2.
J Anxiety Disord. 2007;21(1):105-17. doi: 10.1016/j.janxdis.2006.03.014. Epub 2006 May 2.
Intolerance of uncertainty is the tendency of an individual to consider the possibility of a negative event occurring unacceptable, irrespective of the probability of occurrence. It is a key component of worry, state anxiety, and related anxiety pathologies. The 27-item Intolerance of Uncertainty Scale (IUS) was developed to measure intolerance of uncertainty. Previous psychometric analyses of the IUS have suggested both four- and five-factor models. High inter-item correlations, factor instability, and previous theoretical research support the development of a reduced measure. The present study used two undergraduate samples and evaluated a psychometrically stable 12-item two-factor version of the IUS. The reduced measure (IUS-12) retained exemplary internal consistency, while correlating extremely well with the original IUS and related measures of anxiety and worry. The IUS-12 also demonstrated a stable two-factor structure, representing both anxious and avoidance components of intolerance of uncertainty. Directions for future research and potential applications for assessment are discussed.
不确定性不耐受是指个体倾向于认为负面事件发生的可能性不可接受，而不论其发生的概率如何。它是担忧、状态焦虑及相关焦虑病症的一个关键组成部分。27项不确定性不耐受量表（IUS）是为测量不确定性不耐受而编制的。先前对IUS的心理测量分析提出了四因素模型和五因素模型。较高的项目间相关性、因素不稳定性以及先前的理论研究支持编制一个简化版量表。本研究使用了两个本科样本，并对一个心理测量稳定的12项两因素版IUS进行了评估。简化版量表（IUS-12）保持了出色的内部一致性，同时与原始IUS以及焦虑和担忧的相关测量指标具有极高的相关性。IUS-12还呈现出稳定的两因素结构，代表了不确定性不耐受的焦虑和回避成分。文中讨论了未来研究的方向以及评估的潜在应用。
