Behavioral and Brain Sciences

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Behavioral and Brain Sciences (2009), 32:526-527 Cambridge University Press
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Open Peer Commentary

(Not so) positive illusions

Justin Krugera1, Steven Chana2 and Neal Roesea3

a1 Stern School of Business, New York University, New York, NY 10012.
a2 Department of Marketing, Stern School of Business, New York University, New York, NY 10012.
a3 Kellogg School of Management, Northwestern University, Evanston, IL 60208.
Article author query
kruger j [PubMed]  [Google Scholar]
chan s [PubMed]  [Google Scholar]
roese n [PubMed]  [Google Scholar]


We question a central premise upon which the target article is based. Namely, we point out that the evidence for “positive illusions” is in fact quite mixed. As such, the question of whether positive illusions are adaptive from an evolutionary standpoint may be premature in light of the fact that their very existence may be an illusion.

The evolution of misbelief Ryan T. McKay and Daniel C. Dennett Institute for Empirical Research in Economics, University of Zurich, Zurich 8006, Switzerland; and Centre for Anthropology and Mind, University of Oxford, Oxford OX2 6PE, United Kingdom; The Center for Cognitive Studies, Tufts University, Medford, MA 02155-7059