Objectives
This study explored whether self‐esteem would moderate the effectiveness of a self‐affirmation manipulation at increasing openness to personally relevant health‐risk information.
Design
The study employed a prospective experimental design.
Method
Participants (N = 328) completed either a self‐affirmation manipulation or a control task, prior to reading information detailing the health‐related consequences of taking insufficient exercise. They then completed a series of measures assessing their cognitions towards exercise and their derogation of the information. Exercise behaviour was assessed at 1‐week follow‐up.
Results
Self‐esteem moderated the impact of self‐affirmation on the majority of outcomes. For participants with low self‐esteem, the self‐affirmation manipulation resulted in more positive attitudes and intentions towards exercise, together with lower levels of derogation of the health‐risk information. By contrast, there was no effect of the self‐affirmation manipulation on outcomes for participants with high self‐esteem.
Conclusion
Findings suggest that self‐affirmation manipulations might be of particular benefit for those with low self‐esteem in terms of promoting openness towards health‐risk information. This is promising from a health promotion perspective, as individuals with low self‐esteem often represent those most in need of intervention.
What is already known on this subject?
Self‐affirmation has been shown to result in more open processing of personally relevant health‐risk information.
Individuals low in self‐esteem tend to process such information more defensively than those high in self‐esteem.
What does this study add?
It explores whether self‐esteem moderates the impact of self‐affirmation on responses to health‐risk information.
Findings suggest that individuals with low self‐esteem benefit most from the self‐affirmation manipulation.
This has important applied implications, as individuals with low self‐esteem may be most in need of intervention.