Faktorová štruktúra a reliabilita dotazníka Driver Behavior Questionnaire

The Driver Behavior Questionnaire (DBQ) is currently the most widely used self-report instrument to measure a risky driving style. The aim of the study was to examine the factor structure and reliability of the four-factor Manchester Driver Behavior Questionnaire (28 items) among Slovak non-professional drivers. The questionnaire was administered to a sample of 1010 respondents. Participants had to be over 18 years of age, drive at least 1000 km per year, “B” category driving license was obligatory. An exploratory factor analysis (Principal Component Analysis with varimax rotation) was carried out to assess the structure and dimensionality of the instrument. Furthermore a confirmatory factor analysis was performed to test the fit of the factor model. Internal consistency of the instrument was tested by Cronbach Alpha. The exploratory and confirmatory factor analysis confirmed the four-factor structure of the questionnaire: errors, ordinary violations, lapses, aggressive violations. The internal consistency coefficients (Cronbach’s alpha) were acceptable and at a comparable level in relation to the original instrument (0.65–0.87).