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History
- Received May 14, 2015
- Revision received August 13, 2015
- Accepted August 20, 2015
- First published September 23, 2015.
- Version of record published September 23, 2015.
Copyright & Usage
Copyright © 2015 the authors 0270-6474/15/3513103-07$15.00/0
Author Information
Author contributions
Author contributions: S.H. and T.A.H. designed research; S.H. and T.A.H. performed research; S.H. and T.A.H. analyzed data; S.H. and T.A.H. wrote the paper.
↵*S.H. and T.A.H. contributed equally to this work.
Disclosures
- Received May 14, 2015.
- Revision received August 13, 2015.
- Accepted August 20, 2015.
We thank Antonio Rangel for helpful comments and discussions on this work.
The authors declare no competing financial interests.
- Correspondence should be addressed to Dr. A. Todd Hare, Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, Blümlisalpstrasse 10, 8006 Zurich, Switzerland. todd.hare{at}econ.uzh.ch