Key points are not available for this paper at this time.
This paper was prepared for presentation at the 65th annual meetings of the American Sociological Association, held at Washington, D.C., August 31 through September 3, 1970. At that time, it was distributed as Workshop Paper EME 7030 by the Social Systems Research Institute, University of Wisconsin. Work on this project was in part supported by the Graduate School Research Committee of the University of Wisconsin, by the National Institutes of Health, U.S. Public Health Service (M-6275), and by the Social and Rehabilitation Service, U.S. Department of Health, Education, and Welfare (CRD-314).
Hauser et al. (Fri,) studied this question.