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Anchoring-and-Adjustment Bias in Communication of Disease Risk
Ibrahim Senay*
and
Kimberly A. Kaphingst
* To whom correspondence should be addressed. E-mail: senay{at}illinois.edu.
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Abstract |
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Over the next decade, advances in genomics will make it increasingly possible to provide patients with personalized, genetic-based risks of common diseases, allowing them the opportunity to take preventive steps through behavioral changes. However, previous research indicates that people may insufficiently adjust their subjective risk to the objective risk value communicated to them by a healthcare provider, a phenomenon called anchoringand-adjustment bias. In this narrative review, we analyze existing research on how patients process disease-risk information, and the processing biases that may occur, to show that the bias observed in disease-risk communication is potentially malleable to change. We recommend that, to reduce this bias and change patients’ misperceptions of disease risk in clinical settings, future studies investigate the effects of forewarning patients about the bias, tailoring risk information to their numeracy level, emphasizing social roles, increasing motivation to form accurate risk perception, and reducing social stigmatization, disease worry and information overload.
First published on March 11, 2009, doi:10.1177/0272989X08327395
Medical Decision Making 2009;29:193.
A more recent version of this article appeared on March 1, 2009
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