Jaargang 30 (2010)
Nummer: 3
Artikel: 160

Samenvatting

De Intolerance of Uncertainty Scale (IUS) is een veelgebruikt meetinstrument om de mate van intolerantie voor onzekere situaties in kaart te brengen. Uit verschillende onderzoeken naar de psychometrische kwaliteiten in niet-klinische populaties kwam naar voren dat de IUS een betrouwbaar en valide meetinstrument is. Wat betreft de factorstructuur werd geen eenduidig beeld gevonden. In dit onderzoek worden de betrouwbaarheid, validiteit en factorstructuur van de Nederlandse vertaling van de IUS onderzocht binnen een klinische steekproef van patiënten met een gegeneraliseerde angststoornis (GAS), de stoornis waarvoor in meerdere studies een verband met intolerance of uncertainty is aangetoond. Uit de resultaten komt naar voren dat de betrouwbaarheid en veranderingsgevoeligheid van de IUS binnen deze specifieke populatie adequaat zijn. Echter, voor wat betreft de constructvaliditeit en factorstructuur zijn de resultaten minder eenduidig.

Summary

The Intolerance of Uncertainty Scale (IUS) is a frequently used scale for measuring intolerance of uncertainty (IU). Several studies showed that the psychometric properties of the IUS in nonclinical samples are adequate, except for the factor structure. The present study investigated the reliability, validity, and factor structure of the Dutch version of the IUS in a clinical sample of patients with generalized anxiety disorder (GAD), the disorder for which IU is thought to play a key role in the development and maintenance. Results showed that the Dutch IUS is a reliable instrument that is sensitive to change within this specific clinical sample, but with regard to the construct validity and factor structure results were less clear.

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