Alcohol Effects on Driving-related Skills of Young Drivers

Inclusion Criteria: * Males and females aged 19 to 25. * Reported consumption of at least 1 heavy drinking episode (according to NIAAA criteria of 5 drinks for males and 4 for females within an occasion) in the 6 months prior to eligibility assessment. * Held a valid class G or G2 Ontario driver's license (or equivalent from another jurisdiction) for at least 12 months. * Willing to abstain from alcohol use for the duration of the study, and for 48 hours prior to Session 2. * Provides written and informed consent. Exclusion Criteria: * Taking medications or have any medical condition for which alcohol is contraindicated * Is a regular user of medications that affect brain function (i.e., antidepressants, benzodiazepines, stimulants). * Diagnosis of severe medical or psychiatric conditions. * Meets criteria for current or lifetime Substance Use Disorders (DSM-IV) with the exception of nicotine. * Meets criteria for Alcohol Dependence (DSM-IV) * Is pregnant, is trying to become pregnant, or is currently breastfeeding. * Severe allergic reaction to citrus.