 Contributors  ix
Tomáš Jagelka, PhD, Institute for Applied Microeconomics, University of Bonn, 
Bonn,  Germany
Oliver P. John, PhD, Department of Psychology, University of California, Berkeley, 
Berkeley,  California
Sheri L. Johnson, PhD, Department of Psychology, University of California, Berkeley, 
Berkeley,  California
Wendy Johnson, PhD, Department of Psychology, University of Edinburgh, Edinburgh, 
Scotland, United Kingdom
Evalill Bølstad Karevold, PhD, Department of Psychology, University of Oslo, Oslo, Norway
Tim Kautz, PhD, Mathematica Policy Research, Princeton, New Jersey
Dacher Keltner, PhD, Department of Psychology, University of California, Berkeley, 
Berkeley,  California
Martin G. Köllner, PhD, Department of Psychology, Friedrich‑Alexander University, Erlangen, 
Germany
Robert F. Krueger, PhD, Department of Psychology, University of Minnesota, 
Minneapolis,  Minnesota
Kostadin Kushlev, PhD, Department of Psychology, Georgetown University, Washington, DC
David M. G. Lewis, PhD, School of Psychology and Exercise Science, Murdoch University, 
Murdoch, Australia
Richard E. Lucas, PhD, Department of Psychology, Michigan State University, 
East Lansing, Michigan
Dan P. McAdams, PhD, Department of Psychology, Northwestern University, Evanston, Illinois
Matthias R. Mehl, PhD, Department of Psychology, University of Arizona, Tucson, Arizona
Rodolfo  Mendoza‑Denton, PhD,  Department of Psychology, University of California, Berkeley, 
Berkeley,  California
Anissa Mike, PhD, Data Science Engineer, When I Work, Minneapolis, Minnesota
Daniel K. Mroczek, PhD, Department of Psychology and Department 
of Medical Social Sciences, Northwestern University, Evanston, Illinois
Stephanie N. Mullins‑Sweatt, PhD, Department of Psychology, Oklahoma State University, 
Stillwater,  Oklahoma
Lauren B. Nickel, PhD, Department of Psychology, University of Illinois at Urbana–
Champaign, Champaign,  Illinois
Shigehiro  Oishi, PhD,  Department of Psychology, Columbia University, New York, New York
Joshua R. Oltmanns, MS, Department of Psychology, University of Kentucky, 
Lexington,  Kentucky
Jennifer G. Pearlstein, BS, PhD student, Department of Psychology, University of California, 
Berkeley, Berkeley,  California
Peter J. Rentfrow, PhD, Department of Psychology, University of Cambridge, 
Cambridge, England, United Kingdom
Brent W. Roberts, PhD, Department of Psychology, University of Illinois at Urbana–
Champaign, Champaign,  Illinois
Richard W. Robins, PhD, Department of Psychology, University of California, Davis, 
Davis,  California
Michael D. Robinson, PhD, Department of Psychology, North Dakota State University, 
Fargo, North Dakota