The Intolerance of Uncertainty Inventory: Validity and Comparison of Scoring Methods to Assess Individuals Screening Positive for Anxiety and Depression

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dc.contributor.authorLauriola, Marco
dc.contributor.authorMosca, Oriana
dc.contributor.authorTrentini, Cristina
dc.contributor.authorFoschi, Renato
dc.contributor.authorTambelli, Renata
dc.contributor.authorCarleton, R. Nicholas
dc.date.accessioned2023-03-07T17:37:18Z
dc.date.available2023-03-07T17:37:18Z
dc.date.issued2018-03-26
dc.descriptionCopyright © 2018 Lauriola, Mosca, Trentini, Foschi, Tambelli and Carleton. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en_US
dc.description.abstractIntolerance of Uncertainty is a fundamental transdiagnostic personality construct hierarchically organized with a core general factor underlying diverse clinical manifestations. The current study evaluated the construct validity of the Intolerance of Uncertainty Inventory, a two-part scale separately assessing a unitary Intolerance of Uncertainty disposition to consider uncertainties to be unacceptable and threatening (Part A) and the consequences of such disposition, regarding experiential avoidance, chronic doubt, overestimation of threat, worrying, control of uncertain situations, and seeking reassurance (Part B). Community members (N = 1046; Mean age = 36.69 ± 12.31 years; 61% females) completed the Intolerance of Uncertainty Inventory with the Beck Depression Inventory-II and the State-Trait Anxiety Inventory. Part A demonstrated a robust unidimensional structure and an excellent convergent validity with Part B. A bifactor model was the best fitting model for Part B. Based on these results, we compared the hierarchical factor scores with summated ratings clinical proxy groups reporting anxiety and depression symptoms. Summated rating scores were associated with both depression and anxiety and proportionally increased with the co-occurrence of depressive and anxious symptoms. By contrast, hierarchical scores were useful to detect which facets mostly separated between for depression and anxiety groups. In sum, Part A was a reliable and valid transdiagnostic measure of Intolerance of Uncertainty. The Part B was arguably more useful for assessing clinical manifestations of Intolerance of Uncertainty for specific disorders, provided that hierarchical scores are used. Overall, our study suggest that clinical assessments might need to shift toward hierarchical factor scores.en_US
dc.description.authorstatusFacultyen_US
dc.description.peerreviewyesen_US
dc.identifier.citationLauriola, M., Mosca, O., Trentini, C., Foschi, R., Tambelli, R., & Carleton, R. N. (2018). The Intolerance of Uncertainty Index (IUI): Validity in a community sample and comparison of hierarchical factor scores and summated ratings to assess individuals at risk for anxiety and depression. Frontiers in Psychology, 9, 1-11. https://doi.org/10.3389/fpsyg.2018.00388en_US
dc.identifier.doihttps://doi.org/10.3389/fpsyg.2018.00388
dc.identifier.urihttps://hdl.handle.net/10294/15838
dc.language.isoenen_US
dc.publisherFrontiers Mediaen_US
dc.rightsAttribution 4.0 United States*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectintolerance of uncertaintyen_US
dc.subjectIntolerance of Uncertainty Inventoryen_US
dc.subjectconfirmatory factor analysisen_US
dc.subjectbifactor modelen_US
dc.subjectclinical validityen_US
dc.subjectanxietyen_US
dc.subjectdepressionen_US
dc.subjecttransdiagnosticen_US
dc.titleThe Intolerance of Uncertainty Inventory: Validity and Comparison of Scoring Methods to Assess Individuals Screening Positive for Anxiety and Depressionen_US
dc.typeArticleen_US
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Nicholas Carleton