Postprint version. Published in The Social Science Journal, Volume 38, Issue 3, Fall October 1, 2001, pages 1-3.
Copyright © 2001 Elsevier Science Inc. All rights reserved.
NOTE: At the time of publication, the author Douglas Swanson was not yet affiliated with Cal Poly.
The definitive version is available at http://dx.doi.org/10.1016/S0362-3319(01)00141-0.