Validity and reliability of drivers anger scale and its relationship with psychological parameters and evaluation of differences based on age and sex (Case study: Tehran metropolis)

Document Type : Original Research

Authors
B. Abdi 1
S. naseralavi 2
1 MSc student
2 Professor Assistant
10.22034/21.6.5
Abstract
The Driving Anger Scale (DAS) is one of the most reliable and practical tools for measuring drivers' anger. Therefore, this study intends to evaluate the validity and reliability of this scale among Iranian drivers using appropriate statistical tools. To assess the validity of this tool, two methods of exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used. The results of EFA showed the 6-factor structure is suitable for this scale. Then, the 6-factor structure obtained from the EFA, was compared as three type of models. The results of this method showed that the one-factor structure of this tool is not suitable in comparison with the other two structures, especially the bi-factor one. According to the results of ANOVA test, in terms of gender and age, there are significant differences in driving anger among Iranian participants, which young and men get relatively higher scores. In addition, the results of correlation analysis indicated that there are significant relationships between DAS subscales with Depression-Anxiety-Stress Scale (DASS) and Buss-Perry Aggression (BPAQ) scores. Also, there are significant relationship between the number of major accidents with traffic jams, overall DASS and BPAQ scores. On the other hand, the relationships between the number of minor accidents with the slow driving subscale and the overall BPAQ score were statistically significant. Finally, this study showed that the DAS questionnaire is a valid and reliable criterion for assessing the anger of Iranian drivers.

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Modares Civil Engineering journal
Volume 21, Issue 6
November and December 2021
Pages 75-86