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Psychometric evaluation of a self-efficacy scale for driver competence using the rating scale model
Umeå University, Faculty of Social Sciences, Department of Educational Measurement.
2008 (English)Report (Other academic)
Abstract [en]

This study examined the contribution of item response theory to classicaltest theory when the psychometric properties of a Self-Efficacy Scale forDriver Competence were evaluated. Two samples of driving-license examinees(n = 795; n = 714) were analysed using classical item statisticsand the Rating Scale Model (RSM). Both analyses demonstrated that theSSDC had sound psychometric properties. However, the RSM providedadditional information, as analyses indicated that the number of categoriesshould be reduced and that items tapping higher self-efficacy levelsshould be added to increase measurement precision. In conclusion, thereare benefits of combining classical test theory and item response theorywhen evaluating rating scales.

Place, publisher, year, edition, pages
Umeå: Institutionen för beteendevetenskapliga mätningar, Umeå universitet , 2008. , 19 p.
, EM : Educational measurement, ISSN 1103-2685 ; 62
URN: urn:nbn:se:umu:diva-20297OAI: diva2:208395
Beteendevetenskapliga mätningar, 90187, Umeå
Available from: 2009-03-18 Created: 2009-03-18 Last updated: 2009-11-03

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Sundström, Anna
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