1 Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, MD, USA; Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA. Electronic address: shariliu@jhu.edu.
2 Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
3 Department of Psychology, University of Virginia, Charlottesville, VA, USA.
4 Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA. Electronic address: saxe@mit.edu.