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Title: Trait anger as a predictor of dangerous driving behaviour amongst people who use methamphetamine.
Austin Authors: Mackay, Aaron;Downey, Luke A;Arunogiri, Shalini;Ogeil, Rowan P;Hayley, Amie C 
Affiliation: Centre for Mental Health and Brain Sciences, Swinburne University of Technology, Hawthorn, Australia.
Institute for Breathing and Sleep
Monash Addiction Research Centre, Eastern Health Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, Australia; Turning Point, Eastern Health, Richmond, Victoria, 3121, Australia.
Centre for Mental Health and Brain Sciences, Swinburne University of Technology, Hawthorn, Australia; Institute for Breathing and Sleep, Austin Health Hospital, Melbourne, Australia; International Council for Alcohol, Drugs and Traffic Safety (ICADTS), Australia.
Issue Date: Sep-2024
Date: 2024
Publication information: Accident; Analysis and Prevention 2024-09; 204
Abstract: Despite increased prevalence of methamphetamine in road trauma, it remains unclear how its use translates to an increased risk of traffic-related harm. Exploration of psychosocial factors may thus help identify relevant predictors of dangerous driving behaviour among people who regularly consume methamphetamine. Licenced individuals who report predominant and sustained methamphetamine use (at least 1-time/month for 6 months at heaviest use) were recruited from the Australian community and via targeted campaign (Eastern Health). Psychosocial, substance use and driving behaviour data (Dula Dangerous Driving Index, DDDI) were collected via a secure anonymous online forced-entry survey platform (Qualtrics). Seventy-seven individuals (65.5 % male) aged between 20-50 years [mean = 29.7, ± Standard Deviation (SD) 6.1] were included. Most (90 %) respondents met criteria for problematic methamphetamine use [Severity of Dependency Scale (SDS) score ≥ 5], and 75 % were high-risk alcohol consumers [Alcohol Use Disorders Identification Test (AUDIT-C) score ≥ 4 for men and ≥ 3 for women]. On average, age of first methamphetamine use occurred at 23.3 years (±5.2). A best-possible subset's regression selection method with dangerous driving behaviour as the dependent variable determined the model with three predictors (alcohol use, substance dependence severity and trait anger) as most parsimonious. After controlling for substance use, trait anger strongly and positively predicted dangerous driving behaviour as measured by the DDDI ([F(3,74) = 26.06, p < .001, adjusted R2 = 0.50, Cohens f2 = 0.42). Trait anger is a strong predictor of risky driving among road users who use methamphetamine. Interactions between stable negative-emotional and situational traffic and driving-related factors may increase risk of harm through greater engagement in risk-taking behaviour.
DOI: 10.1016/j.aap.2024.107634
Journal: Accident; Analysis and Prevention
Start page: 107634
PubMed URL: 38795421
ISSN: 1879-2057
Type: Journal Article
Subjects: Dangerous
Methamphetamine/adverse effects
Amphetamine-Related Disorders/psychology
Automobile Driving/psychology
Driving Under the Influence/statistics & numerical data
Driving Under the Influence/psychology
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