There is a need for evidence about the exact role of alcohol expectancies on gambling behaviour. Alcohol expectancies refer to beliefs that people have about the effects of alcohol use. This study looked at the effects of alcohol use and expectancies on gambling behaviour. The participants were adult men. They were placed into one of three conditions in which they either drank alcohol, an alcohol-placebo, or nonalcoholic beverages. The participants then played a simulated roulette game. The researchers found that both the alcohol and alcohol-placebo groups gambled more than the no-alcohol group in terms of number of spins. There were no differences across the groups on the total amount wagered and the amount of money remaining.