Can straight-forward information change alcohol-related expectancies?

In an experimental setting 40 male subjects were asked about their aggressive expectancies in relation to alcohol. They then drank either an alcohol or a placebo drink while exposed to an attractive film and written material designed to alter their beliefs. Results indicate that increases in aggression are expected when drinking and that such beliefs are stable and not influenced by short and trustworthy information.

RCT Entities:   Population Interventions Outcomes