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Journal Article

Citation

Pérez-Moreno E, Hernández-Lloreda MJ, Gallego-Largo TR, Castellanos MÁ. Span. J. Psychol. 2015; 18: e93.

Affiliation

Universidad Complutense de Madrid (Spain).

Copyright

(Copyright © 2015, Complutense University of Madrid, Publisher Cambridge University Press)

DOI

10.1017/sjp.2015.98

PMID

26610847

Abstract

Impulsivity has been widely studied in the context of traffic. The trait is believed to be the root of some accidents, along with other variables like aggression and anger. The present research objective is to develop a new scale - the I-Driving Scale (IDS) - to evaluate and measure the construct of impulsivity in specific driving situations. To that end, two studies were conducted, with 162 and 107 participants, respectively. In both studies, participants were recruited via their social networks, and answered anonymously. In addition to the IDS, they completed the Use the Vehicle to Express Anger subscale of the Driving Anger Expression Inventory (DAX), the Driving Anger Scale (DAS), and the Barratt Impulsivity Scale (BIS11), and also provided demographic information. The final scale had 11 items falling into two factors: impatience, and aggressiveness/abruptness. The results show a high consistency (αT =.81, αI =.70, and αA =.85 in the first study; αT =.83, αI =.80, and αA =.88 in the second study). Statistical results of Exploratory Factor Analysis in the first sample indicated goodness of fit to a two-factor model (RMSR =.057, GFI =.98). The second study confirmed that factorial structure (χ2/df = 80.50/43 = 1.87, RMSEA =.088, CFI =.94, TLI =.92). Correlations with other measures indicated the Impatience subscale is associated with different expressions of anger behind the wheel, and directly correlated with the loss of driver's license points. Furthermore, the Aggressiveness or Abruptness subscale was associated with more mechanical aspects, and correlated inversely with age.


Language: en

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