Psychometric evaluation of a self-efficacy scale for driver competence using the rating scale model

This study examined the contribution of item response theory to classical test theory when the psychometric properties of a self-efficacy scale for driver competence (SSDC) were evaluated. Two samples of driving-license examinees were analysed using classical item statistics and the rating scale model (RSM). Both analyses demonstrated that the SSDC had sound psychometric properties. However, the RSM provided additional information, as analyses indicated that the number of categories should be reduced and that items tapping higher self-efficacy levels should be added to increase measurement precision. In conclusion, there are benefits of combining classical test theory and item response theory when evaluating rating scales.


  • English

Media Info

  • Pagination: 19p
  • Serial:
    • Issue Number: EM 62

Subject/Index Terms

Filing Info

  • Accession Number: 01383668
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 22 2012 3:43PM