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Self-Affirmation and the Biased Processing of Threatening Health-Risk Information
Peter R. Harris
University of Sheffield, p.harris{at}sheffield.ac.uk
Lucy Napper
University of Sheffield
Self-affirming before reading about the link between alcohol and breast cancer promoted increased message acceptance among young women at higher risk. Differences were maintained on variables measured up to 1 month later. Relative to their nonaffirmed counterparts, higher risk, self-affirmed participants had higher ratings of risk, imagination, intention to reduce alcohol consumption, and negative affect, such as fear, while reading the leaflet. In contrast, there were no differences between the groups on measures of broader message acceptance (belief in the link, evidence strength). Thus, self-affirmation promoted acceptance of the personal relevance of the message, a critical step in the precaution adoption process. Overall, the findings support the view that self-affirmation in an unrelated domain can offset defensive processing of a threatening health message, promoting central route persuasion and producing consequential and durable increases in message acceptance.
Key Words: self-affirmation defensive processing perceived risk optimistic bias persuasion
Personality and Social Psychology Bulletin, Vol. 31, No. 9,
1250-1263 (2005)
DOI: 10.1177/0146167205274694

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