Psychometric properties of instruments for assessing intolerance of uncertainty: A Review Study

The intolerability of uncertainty is defined as an inherent characteristic of the set of negative beliefs about uncertainty and its consequences, which include the tendency to react negatively to emotional, cognitive, and behavioral levels to unknown situations and events. Considering the extent of the intolerance of uncertainty structure in the research literature of emotional disorders, and especially the significant growth of studies in this field over the past few years, the selection of appropriate and precise tools for the research and therapeutic purposes related to this structure is of great importance. Instruments such as the intolerance if uncertainty scale- 27 items, the intolerance of uncertainty scale- 12 items, the intolerance of uncertainty inventory, the situation-specific intolerance of uncertainty scale, the disorder-specific intolerance of uncertainty scale and the uncertainty response scale has been designed and validated. The purpose of this study is to introduce these tools, provide a short history, present detail psychometric properties, and at the end of each tool, bring a unique feature for both researchers and therapists. This allows professionals to choose the appropriate tools for their intended purpose.