1. Department of Psychology, University of Utah, Salt Lake City, Utah 84112, USA
2. Department of Psychology, University of Virginia, Charlottesville, Virginia 22904, USA
3. The Gallup Organization, Washington, DC 20004, USA
4. Department of Psychology, University of Illinois, Urbana-Champaign, Champaign, Illinois 61820, USA;
5. Department of Psychological Sciences, Purdue University, West Lafayette, Indiana 47907, USA;,