Send to

Choose Destination
Psychol Bull. 2015 Nov;141(6):1178-204. doi: 10.1037/a0039729.

Appealing to fear: A meta-analysis of fear appeal effectiveness and theories.

Author information

Department of Psychology, University of Illinois at Urbana- Champaign.
Department of Psychology, University of Nevada.
College of Nursing, University of Missouri-St. Louis.
Department of Social and Behavioral Health, Virginia Commonwealth University.


Fear appeals are a polarizing issue, with proponents confident in their efficacy and opponents confident that they backfire. We present the results of a comprehensive meta-analysis investigating fear appeals' effectiveness for influencing attitudes, intentions, and behaviors. We tested predictions from a large number of theories, the majority of which have never been tested meta-analytically until now. Studies were included if they contained a treatment group exposed to a fear appeal, a valid comparison group, a manipulation of depicted fear, a measure of attitudes, intentions, or behaviors concerning the targeted risk or recommended solution, and adequate statistics to calculate effect sizes. The meta-analysis included 127 articles (9% unpublished) yielding 248 independent samples (NTotal = 27,372) collected from diverse populations. Results showed a positive effect of fear appeals on attitudes, intentions, and behaviors, with the average effect on a composite index being random-effects d = 0.29. Moderation analyses based on prominent fear appeal theories showed that the effectiveness of fear appeals increased when the message included efficacy statements, depicted high susceptibility and severity, recommended one-time only (vs. repeated) behaviors, and targeted audiences that included a larger percentage of female message recipients. Overall, we conclude that (a) fear appeals are effective at positively influencing attitude, intentions, and behaviors; (b) there are very few circumstances under which they are not effective; and

[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for American Psychological Association Icon for PubMed Central
Loading ...
Support Center