Temporal stability of self-reported driving behaviors

POÓ, F.; MONTES, S.; LEDESMA, R.

Groningen

Conferencia; The 5th International Conference on Traffic and Transport Psychology; 2012

University of Groningen

Reliability of driving self-report measures is usually assessed through internal consistence analysis. Other important and necessary ways of reliability estimate such as test-retest are little used. The present research examined the 6-month test-retest reliability for two self-report driving measures, the MDSI (Multidimensional Driving Style Inventory) and the ARDES (Attention-related Driving Errors Scale). A first study was conducted in order to assess the stability of the MDSI scores. Participants were a sample of 50 drivers drawn from the general population of Mar del Plata (Argentina). Results indicated strong correlation coefficients for the different MDSI scales (Risky: r=.93, p<.001; Dissociative: r=.83, p<.001; Anger: r=.89, p<.001; Anxious: r=.79, p<.001; and Careful: r=.71, p<.001). A second study analysed the temporal stability of the ARDES (n= 65). Results showed high stability in the ARDES scores (r=.80, p<.001). These findings suggest that drivers scores are highly stable across time, providing additional evidence of reliability for self-reports. Further studies over longer periods of time are needed.