Alexander J Shackman1, Tor D Wager2. 1. Department of Psychology, University of Maryland, College Park, MD, 20742, USA; Neuroscience and Cognitive Science Program, University of Maryland, College Park, MD, 20742, USA; Maryland Neuroimaging Center, University of Maryland, College Park, MD, 20742, USA. Electronic address: shackman@umd.edu. 2. Department of Psychology and Neuroscience, University of Colorado, Boulder, CO, 80309, USA; Institute of Cognitive Science, University of Colorado, Boulder, CO, 80309, USA. Electronic address: Tor.Wager@Colorado.edu.