1. Department of Psychological and Brain Sciences and Program in Neuroscience (A.L.H., D.R.S.), Indiana University, Bloomington, Indiana 47405
2. Institute of Medical Science (S.M.F., D.A.M.), University of Toronto, Toronto, Ontario, Canada M5S 1A1
3. Department of Psychology (D.A.M.), University of Toronto, Mississauga, Ontario, Canada L5L 1C6