Knowledge gap effects in a health information campaign

James S. Etfema*, James W. Brown, Russell V. Luepker

*Corresponding author for this work

Research output: Contribution to journalArticle

92 Scopus citations


The evaluation of a campaign to increase cardiovascular health knowledge indicates that within the treatment community, education was a significant predictor of knowledge before the campaign but was not a significant predictor after the campaign. Two variables related to motivation to acquire information about cardiovascular health (age and perceived threat of heart attack) were not significant predictors of knowledge before the campaign but were significant predictors afterwards. These results suggest that the infusion of information into a social system via the mass media can close as well as open knowledge gaps and that motivation to acquire information in a specific knowledge domain is a factor controlling gap effects.

Original languageEnglish (US)
Pages (from-to)516-527
Number of pages12
JournalPublic Opinion Quarterly
Issue number4
StatePublished - Dec 1 1983


ASJC Scopus subject areas

  • Communication
  • History
  • Sociology and Political Science
  • Social Sciences(all)
  • History and Philosophy of Science

Cite this