Placing alcohol warnings before, during, and after TV beer ads: Effects onknowledge and responses to the ads and the warnings

This experiment compared the effects of warnings placed before, during, or after television beer advertisements. Warnings before or after the ads led to higher knowledge scores and fewer negative comments about the warning pr esentation than did warnings scrolled during the ads; warnings after and du ring bill not before the ads significantly decreased positive comments abou t the ads. Earlier findings regarding effects of warning topic and quantita tive information in the warnings were replicated.