eCite Digital Repository

'High' and drunk driving? Perceived impairment and objective driving risk-taking after co-injesting alcohol with energy drinks


Peacock, A and Barrington, H and Cash, C and Sinnett, N and Bruno, R, 'High' and drunk driving? Perceived impairment and objective driving risk-taking after co-injesting alcohol with energy drinks, Proceedings of the 38th Annual RSA Scientific Meeting, 20-24 June 2015, San Antonio, Texas, pp. 286A. ISSN 1530-0277 (2015) [Conference Extract]

Pending copyright assessment - Request a copy


Consuming alcohol mixed with energy drinks (AmED) is thought to increase risk-taking compared to when alcohol is consumed alone. To date, there have only been two controlled experimental studies testing this hypothesis, showing similar performance outcomes after AmED versus alcohol. To date, there has been no research: (i) exploring behavioural outcomes across the breath alcohol concentration (BrAC) curve, (ii) adopting naturalistic behavioural measures, or (iii) administering energy drink (ED) doses similar to those ingested in real-world AmED sessions. Consequently, the aim of the present study was to determine the effects of AmED (500 mL and 750 mL ED) versus alcohol on risk-taking behaviour during a driving simulator task completed on ascending and descending BrAC limbs. Using a single-blind, placebo-controlled, crossover design, 19 participants completed four sessions where they received: (i) placebo alcohol and placebo ED (placebo), (ii) active alcohol and placebo ED (alcohol), (iii) active alcohol and 500 mL ED (AmED 500 mL), and (iii) active alcohol and 750 mL ED (AmED 750 mL). Outcomes were assessed at 0.050%ascending target BrAC, 0.080% target BrAC, and 0.050%descending target BrAC. After controlling for differences in BrAC, participants reported increased willingness to drive (Hedges’ g = 0.62–78) and reduced risk-taking on select indices, including speeding (g = 0.40–0.60) and centreline crossings (g = 0.40–0.91), after AmED 500 mL and 750 mL versus alcohol at 0.050%ascending and 0.080% target BrAC. In contrast, risk-taking during an overtaking manoeuver was increased at these time points after AmED 500 mL compared to alcohol (g = 0.45–0.62). Average speed at minimum distance and percentage of time out of lane were similar after AmED versus alcohol. These findings suggest differential effects of AmED versus alcohol on risk-taking dependent on the measure adopted, with indications that AmED consumptionmay adversely affect perception of safety in the decision to drive. Future research assessing risk-taking post-consumption in real-world settings is strongly recommended, as well as examination of the potential complex interplay between pharmacological, psychological and personality factors in determining AmED risk-taking outcomes.

Item Details

Item Type:Conference Extract
Keywords:alcohol, energy drinks, caffeine, driving, intoxication, harm
Research Division:Psychology
Research Group:Biological psychology
Research Field:Behavioural neuroscience
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in psychology
UTAS Author:Peacock, A (Miss Amy Peacock)
UTAS Author:Barrington, H (Miss Helen Barrington)
UTAS Author:Cash, C (Ms Catherine Cash)
UTAS Author:Sinnett, N (Mr Nicholas Sinnett)
UTAS Author:Bruno, R (Associate Professor Raimondo Bruno)
ID Code:102327
Year Published:2015
Deposited By:Psychology
Deposited On:2015-08-12
Last Modified:2015-08-13

Repository Staff Only: item control page