Department of Psychology, Temple University, 1701 North 13th Street, Philadelphia, PA 19122, United States.
J Anxiety Disord. 2020 Apr;71:102197. doi: 10.1016/j.janxdis.2020.102197. Epub 2020 Feb 29.
Intolerance of uncertainty (IU) is a cognitive vulnerability for pathological anxiety. The current study adapted the Intolerance of Uncertainty Index-A for Children (IUI-A-C), and created a single-item Intolerance of Uncertainty Clinician-Rated Index (IUCR), both of which assess a youth's general inability to endure uncertainty. Psychometric properties of these two measures were evaluated. Participants were 146 youth aged 7-17 years seeking treatment for anxiety. The IUI-A-C evidenced individual item performance (i.e., correlations between each item and the total remainder score > .40, ps <.001), internal consistency, convergent validity with the IUCR and self-report measures of anxiety and functional impairment, divergent validity with ADHD severity, and retest reliability with a mean interval of over four weeks. The IUCR also evidenced convergent validity with the IUI-A-C and self-report measures of anxiety and functional impairment and divergent validity with ADHD severity. The IUI-A-C predicted composite principal diagnosis severity but did not predict composite GAD diagnosis severity. The IUI-A-C and IUCR have utility as measures of IU in youth. The role of IU in specific anxiety disorders and future research are discussed.
不确定性容忍度（IU）是病理性焦虑的认知脆弱性。本研究改编了儿童不确定性容忍度指数 - A（IUI-A-C），并创建了一个单一项目的不确定性容忍度临床评定指数（IUCR），两者均评估了青少年普遍无法忍受不确定性的情况。评估了这两个测量方法的心理测量特性。参与者是 146 名年龄在 7-17 岁之间的青少年，他们因焦虑症寻求治疗。IUI-A-C 表现出个体项目表现（即，每个项目与总分余数之间的相关性>.40，p <.001），内部一致性，与 IUCR 和自我报告的焦虑和功能障碍测量以及 ADHD 严重程度的发散效度的收敛效度，以及超过四周的平均间隔的重测信度。IUCR 还与 IUI-A-C 和自我报告的焦虑和功能障碍测量以及 ADHD 严重程度的发散效度具有收敛效度。IUI-A-C 预测了综合主要诊断严重程度，但未预测综合广泛性焦虑症诊断严重程度。IUI-A-C 和 IUCR 可作为青少年 IU 的测量方法。讨论了 IU 在特定焦虑症中的作用和未来的研究。
