Department of Psychology, University of Regina, Saskatchewan, Canada.
School of Psychology and Speech Pathology, Curtin University, Perth, Australia.
J Anxiety Disord. 2015 Apr;31:49-57. doi: 10.1016/j.janxdis.2015.01.006. Epub 2015 Feb 7.
Intolerance of uncertainty (IU) is a construct of growing prominence in literature on anxiety disorders and major depressive disorder. Existing measures of IU do not define the uncertainty that respondents perceive as distressing. To address this limitation, we developed eight scales measuring disorder-specific intolerance of uncertainty (DSIU) relating to various anxiety disorders and major depressive disorder. We used exploratory factor analysis and item characteristic curves in two large undergraduate samples (Ns=627 and 628) to derive eight three-item DSIU scales (24 items total) that exhibited excellent psychometric properties. Confirmatory factor analysis supported the factor structures of the scales and the transdiagnostic nature of IU. Each scale predicted unique variance in its respective symptom measure beyond a traditional measure of IU. DSIU represents a theoretically proximal and causal intermediary between known vulnerability factors and disorder symptomatology. The DSIU scales can be used to advance theories of psychopathology and inform case conceptualization and treatment planning.
不确定性容忍度（IU）是焦虑障碍和重度抑郁症文献中日益突出的一个概念。现有的 IU 测量方法并未定义受访者认为痛苦的不确定性。为了解决这一局限性，我们开发了八个量表，用于测量与各种焦虑障碍和重度抑郁症相关的特定于障碍的不确定性容忍度（DSIU）。我们在两个大型本科生样本（N=627 和 628）中使用探索性因素分析和项目特征曲线，得出了八个由三个项目组成的 DSIU 量表（共 24 个项目），这些量表具有优异的心理测量学特性。验证性因素分析支持了这些量表的因子结构和 IU 的跨诊断性质。每个量表在各自的症状测量中预测了独特的方差，超出了传统 IU 测量的范围。DSIU 代表了已知易感性因素和障碍症状之间的理论上的近端和因果中介。DSIU 量表可用于推进精神病理学理论，并为案例概念化和治疗计划提供信息。
