How does alcohol affect judgment? To provide some insight, an experiment was conducted. A random sample of customers of an Ohio club was selected. Each respondent was asked to assess the attractiveness of members of the opposite sex who were in the club at the time. The assessment was to be made on a 5 point scale (where 1 = Very unattractive, 2 = Unattractive, 3 = Neither attractive nor unattractive, 4 = Attractive, and 5 = Very attractive).

The survey was conducted 3 hours before closing and again just before closing using another group of respondents. Can we conclude that the assessments made just before closing are higher than those made 3 hours earlier? If so, what does this imply about the effects of alcohol on judgment?