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The data were put in manageable order by David Bruce's proficient programming, and the manuscript was improved by the comments of Chris Argyris, Donald Black, Scott Boorman, Burton Clark, Richard Hackman, Rosabeth Kanter, Melvin Kohn, W. Russell Neuman, Lee Rainwater, Albert J. Reiss, Frank Romo, and Barry Seltser to an earlier draft. Preparation of this paper was supported by the Manpower Administration, U.S. Department of Labor. Of course, the views presented here are those of the author.
James E. Rosenbaum (Fri,) studied this question.
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