Working papers are intended to report exploratory results of research and analysis undertaken by the National Center for Science and Engineering Statistics. Any opinions, findings, conclusions, or recommendations expressed in this working paper do not necessarily reflect the views of the National Science Foundation. This working paper has been released to inform interested parties of ongoing research or activities and to encourage further discussion of the topic.
This research was conducted by the Washington State University’s Social and Economic Sciences Research Center on behalf of the National Science Foundation’s National Center for Science and Engineering Statistics with support from the U.S. Department of Agriculture–National Agricultural Statistics Service and the National Science Foundation–National Center for Science and Engineering Statistics under cooperative agreement number 43-3AEU-5-80039.
 Morgan Millar is a Research Associate with the Social and Economic Sciences Research Center at Washington State University. Don Dillman is Regents Professor in the Department of Sociology and Deputy Director of the Social and Economic Sciences Research Center at Washington State University. Direct correspondence to Morgan Millar at P.O. Box 644014, Pullman, WA 99164-4014 (e-mail: email@example.com).