DAX: The Driving Angry Expression Inventory

The Aggressive Behavior Index (αs = 0.85 to 0.89, current α = 0.87) assesses the frequency (0 to 5+ with 5+ being treated as a 5 in analyses) that the person reported engaging in each of 13 aggressive behaviors while driving in the last 3 months (e.g., yelling at another driver or cutting a driver off in anger). The Risky Behavior Index (αs = 0.83 to 0.86, current α = 0.86) involves reports of the frequency (0 to 5+) with which the person engaged in 15 risky behaviors while driving in the last 3 months (e.g., drinking and driving, driving without a seat belt, or speeding 20 or more mph over the limit). Aggressive and risky behaviors correlate positively with each other, driving anger, hostile driving-related thinking, and verbal, physical and vehicular forms of driving anger expression (Deffenbacher et al. 2002a, 2003d, 2004).

The Driving Anger Expression Inventory (DAX) is an instrument used to measure ways that people express their anger while driving. (Deffenbacher, Deffenbacher, Lynch, Oetting, & Swaim, 2001; Deffenbacher, Lynch, Oetting, & Swaim, 2002; Deffenbacher, White, & Lynch, 2004a; Deffenbacher, White, & Lynch, 2004b; González-Iglesias, Gómez-Fraguela, & Luengo-Martín, 2012; Dahlen, Edwards,Tubré, Zyphur, & Warren, 2012; Kazemeini, Ghanbari-e-Hashem-Abadi & Safarzadeh, 2013). The DAX was developed because not only can the amount of anger a person has cause negative consequences on the road, but the way a driver expresses anger on the road can have a major effect as well (Deffenbacher et al., 2002, 2004a). Not only can the way a person expresses their anger effect the safety for the driver, but for others on the road as well (Kazemeini et al., 2013). People also have different ways of expressing anger even if ...

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... research part F: traffic psychology and behaviour, 15 (4), pp. 404--412. doi: 10.1016/j.trf.2012.03.002

(González-Iglesias, Gómez-Fraguela, & Luengo-Martín, 2012)

(González-Iglesias et al., 2012)

Kazemeini, T. , Ghanbari-e-Hashem-Abadi, B. & Safarzadeh, A. (2013). Mindfulness Based Cognitive Group Therapy vs Cognitive Behavioral Group Therapy as a Treatment for Driving Anger and Aggression in Iranian Taxi Drivers. Psychology, 4, 638-644. doi: 10.4236/psych.2013.48091.

(Kazemeini, Ghanbari-e-Hashem-Abadi & Safarzadeh, 2013)

(Kazemeini et al., 2013)

Dahlen, E., Edwards, B., Tubr'E, T., Zyphur, M. and Warren, C. 2012. Taking a look behind the wheel: An investigation into the personality predictors of aggressive driving. Accident Analysis & Prevention, 45 pp. 1--9.

(Dahlen, Edwards,Tubré, Zyphur, & Warren, 2012)

(Dahlen et al., 2012)