Preliminary data from a study-in-progress support the view that public information campaigns may have greater efficacy than shown by previous research. To evaluate the public impact of the Advertising Council's "Take a Bite Out of Crime" campaign, which was aimed at promoting greater citizen involvement in crime prevention activities, data were derived from a national survey of 1,049 adults concerning their reactions to the campaign and from a panel sample examining changes in citizen crime prevention, orientations, and behaviors as a function of campaign exposure. Results indicate that the campaign of public service announcements (PSA's) had marked and consistent influences on citizen perceptions and attitudes regarding crime prevention and on their taking of specific, preventive actions. Campaign exposure was significantly related to increases in how much respondents thought they knew about crime prevention, how effective they thought citizen prevention efforts were, and how confident they felt about being able to protect themselves from crime, as well as to increases in six of the seven specific, preventive activities most emphasized in the PSA's. Analyses are being conducted to determine the factors involved in these changes. This report includes a 2-page bibliography, the PSA storyboards, and 14 data tables. (Author/LMM)