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Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat
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Published on: September 12, 2014

Subjective knowledge and fear appeal effectiveness: implications for message design.

Robin L Nabi1, David Roskos-Ewoldsen, Francesca Dillman Carpentier

  • 1Department of Communication, University of California, Santa Barbara, CA 93106, USA. nabi@comm.ucsb.edu

Health Communication
|April 30, 2008
PubMed
Summary

Perceived health knowledge impacts fear appeals. Men with high knowledge preferred efficacy messages, while women

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Published on: October 6, 2011

Area of Science:

  • Health Communication
  • Psychology
  • Persuasion Theory

Background:

  • Fear-based persuasive appeals are common in health campaigns.
  • Individual differences, like perceived knowledge, may moderate message effectiveness.
  • Understanding these moderators is crucial for designing effective health interventions.

Purpose of the Study:

  • To examine how perceived health knowledge influences responses to fear appeals.
  • To investigate the differential effects of strong fear, weak fear, and efficacy-only messages.
  • To explore gender differences in reactions to health messages based on knowledge levels.

Main Methods:

  • 263 undergraduates were exposed to one of three messages (strong fear, weak fear, efficacy-only).
  • Messages promoted breast or testicular self-examination.
  • Participants' reactions and persuasion levels were measured.

Main Results:

  • Men high in perceived knowledge showed less reactance and more persuasion with efficacy-only messages.
  • Men low in perceived knowledge did not exhibit this pattern.
  • Women high in perceived knowledge reacted similarly across all three message types.

Conclusions:

  • Perceived health knowledge moderates the effectiveness of fear appeals, particularly for men.
  • Efficacy-only messages may be more persuasive for knowledgeable men.
  • Future research should consider knowledge levels and gender in health message design.