Confirmatory factor analysis of the Dutch Intolerance of Uncertainty Scale: Comparison of the full and short version
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Background and objectives The Intolerance of Uncertainty Scale (IUS) was developed for assessing reactions to ambiguous situations, uncertainty, and future events. The IUS has been validated in different languages, but equivocal factor structures, in combination with highly interrelated items and factors, resulted in a redundancy of the items of the English version. In the current study, the psychometric properties of the Dutch version of the IUS were examined, and compared with the shortened 12-item version (IUS-12).Methods Confirmatory factor analyses were used to investigate different factor structures of both the full and short version of the IUS.Results Results indicated that the IUS-12 model with two factors (Prospective Anxiety and Inhibitory Anxiety) provides the best fit. The reduced measure has equally good internal consistency, and is highly correlated with the full version.Limitations Future research could investigate whether the current findings generalize to clinical populations.Conclusion To summarize, the usage of the short 12-item version of the IUS should be encouraged in future research concerning intolerance of uncertainty.
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The IUSS showed good construct validity and internal consistency (α=.85).
“The IUSS showed good construct validity and internal consistency ( a = .85; Helsen et al., 2013).”
From EFFECT OF TRAINING ON BELIEFS ABOUT EXPOSURE THERAPY IN EXPERIENCED THERAPISTS (2023) · cites this paper as Helsen et al., 2013
Section 3.3.2 supports construct validity for the short IUS, and section 3.3.1 reports excellent internal consistency in Helsen et al.’s sample. But its reported alpha is .83, not .85; section 2.2.1 gives .85 as a finding from Carleton et al. (2007). (LLM, conf=0.88)
Experimental — accuracy not yet measuredThere has been considerable support for a two-factor IUS-12 structure: a 7-item prospective IU scale and a 5-item inhibitory IU scale.
“there has been considerable support for a two-factor IUS-12 structure: (1) a 7-item prospective IU scale related to action/approach-oriented strategies in order to increase certainty (e.g. seeking more information), and (2) a 5-item inhibitory IU associated with inaction/avoidance-oriented thoughts and behaviours (e.g. delayed decision-making) [251, 259, 264–271].”
Two factors can be distinguished in the IUS-12: Prospective Anxiety (items 1-7; α = .78) and Inhibitory Anxiety (items 8-12; α = .72).
“Two factors can be distinguished: Prospective Anxiety (future-related fear and anxiety; item 1 through 7; α = .78), and Inhibitory Anxiety (uncertainty inhibiting action or experience; item 8 through 12; α = .72) (Helsen et al., 2013).”
From To deliver or not to deliver cognitive behavioral therapy for eating disorders: Replication and extension of our understanding of why therapists fail to do what they should do (2018) · cites this paper as Helsen et al., 2013
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EFFECT OF TRAINING ON BELIEFS ABOUT EXPOSURE THERAPY IN EXPERIENCED THERAPISTS
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- Authors
- Helsen, K., Van den Bussche, E., Vlaeyen, J. W. S., & Goubert, L.
- Affiliations
- Ghent University (BE)
- Maastricht University (NL)
- Corresponding author
- Helsen, Kim
- Venue
- Journal of Behavior Therapy and Experimental Psychiatry
- Publisher
- Elsevier BV
- Published
- 2013-03
- Volume
- 44
- Issue
- 1
- Pages
- 21-29
- ISSN
- 0005-7916 (ISSN-L)
- OpenAlex
- W2084275570
- Cited by
- 112
- References
- 81
- Citations by year
- 2026: 8 · 2025: 9 · 2024: 7 · 2023: 21 · 2022: 10 · 2021: 16 · 2020: 3 · 2019: 4 · 2018: 7 · 2017: 8 · 2016: 9 · 2015: 4 · 2014: 2 · 2013: 4
- FWCI
- 4.29
- Type
- journal article
- Language
- en
- Open access
- Licence
- Locations
- Journal of Behavior Therapy and Experimental Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Research Publications (Maastricht University) (publishedVersion, other-oa)
- Ghent University Academic Bibliography (Ghent University) (submittedVersion, other-oa)
- Lirias (submittedVersion, other-oa)
- Research Publications (Maastricht University) (submittedVersion)
- Funders
- Fonds Wetenschappelijk Onderzoek
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Social Sciences › Decision Sciences › General Decision Sciences › Decision-Making and Behavioral Economics
- Keywords
- Intolerance of Uncertainty Scale, intolerance of uncertainty, Dutch version, short-form questionnaire, factor structure, psychometric properties, questionnaire validation
- MeSH terms
- Adolescent, Adult, Aged, Anxiety, Depression, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Psychometrics, Reproducibility of Results, Uncertainty, White People, Young Adult
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