Article Information
- Received February 10, 2000
- Revision received March 17, 2000
- Accepted March 17, 2000
- First published June 1, 2000.
- Version of record published June 1, 2000.
Author Information
- Mark G. Baxter1,
- Amanda Parker2,
- Caroline C. C. Lindner3,
- Alicia D. Izquierdo3,4, and
- Elisabeth A. Murray3
- 1Department of Psychology, Harvard University, Cambridge, Massachusetts 02138,
- 2School of Psychology, University of Nottingham, Nottingham NG7 2RD, United Kingdom,
- 3Laboratory of Neuropsychology, National Institute of Mental Health, Bethesda, Maryland 20892, and
- 4Department of Psychology, The George Washington University, Washington, DC 20052
Author contributions
Disclosures
- Received February 10, 2000.
- Revision received March 17, 2000.
- Accepted March 17, 2000.
This work was supported by the Intramural Research Program of the National Institute of Mental Health. We thank Richard Saunders for invaluable assistance in surgery, Alison Schaefer for help with behavioral testing, Tim Bussey for programming the progressive ratio task, and Peter Holland and Steve Wise for helpful comments on an earlier version of this manuscript.
Correspondence should be addressed to either Dr. Mark G. Baxter, Department of Psychology, Harvard University, 906 William James Hall, 33 Kirkland Street, Cambridge, MA 02138, E-mail:mbaxter{at}wjh.harvard.edu, or Dr. Elisabeth A. Murray, Laboratory of Neuropsychology, National Institute of Mental Health, Building 49, Room 1B80, 49 Convent Drive, Bethesda, MD 20892-4415, E-mail:eam{at}ln.nimh.nih.gov. Reprint requests should be addressed to Elisabeth A. Murray.
