1. aLanguage Research Center, Georgia State University, Atlanta, GA 30034, USA
2. bDepartment of Psychology, Georgia State University, P.O. Box 5010, Atlanta, GA 30302, USA
3. cNeuroscience Institute and Department of Philosophy, Georgia State University, Atlanta, GA 30302, USA
4. dThe Center for Neuroeconomic Studies, Claremont Graduate University, Claremont, CA 91711, USA