1. Department of Psychology, University of Southern California, Los Angeles, CA 90089, USA, 2Coatesville Veterans Affairs Medical Center, Coatesville, PA 19320, USA, 3Department of Economics, University of Cape Town, Rondebosch 7701, South Africa, 4Neuroscience Graduate Program, University of Southern California, Los Angeles, CA 90089, USA, and 5Brain and Creativity Institute, University of Southern California, Los Angeles, CA 90089, USA