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Article
A Meta-Analysis of Political Advertising
Human Communication
  • William L. Benoit, Wayne State University
  • Glenn M. Leshner, Stanford University
  • Sumana Chattopadhyay, Marquette University
Document Type
Article
Language
eng
Format of Original
16 p.
Publication Date
1-1-2007
Publisher
Pacific and Asian Communication Association
Disciplines
Abstract
Political advertising is one of the dominant media for reaching voters. Previous metaanalyses (Allen & Burrell, 2002; Lau, Sigelman, Heldman, & Babbitt, 1999) found little or no net benefit to negative versus positive ads. However, this finding does not reveal whether ads have effects (both or neither could be persuasive). A meta-analysis revealed that political spots increased issue knowledge, influenced perceptions of the candidates’ character, altered attitudes, and affected candidate preference; influenced agenda-setting, and altered vote likelihood (turnout). One moderator variable was detected: The effect size for learning was larger for studies of students than non-students; however, the effect size for both sub-groups was significant. On the other hand, political ads had larger effects on attitudes for non-students than students.
Comments

Accepted version. Human Communication, Volume 10, No. 4 (2007). The published version of the journal article is also available here.

Citation Information
William L. Benoit, Glenn M. Leshner and Sumana Chattopadhyay. "A Meta-Analysis of Political Advertising" Human Communication (2007)
Available at: http://works.bepress.com/sumana_chattopadhyay/3/