The income and occpres variables are objective measures of income and occupational prestige, respectively.
Summary statistics data from Kluegel, J. R., R. Singleton, Jr.,            and C. E.  Starnes, 1977, "Subjective class identification:            A multiple indicator approach",            _American Sociological Review_, 42: 599-611.
Data are also analyzed in Bollen, K. A. 1989, _Structural        Equations with Latent Variables_, New York: John Wiley & Sons, Inc.
The summary statistics represent 432 white adults included in the sample          for the 1969 Gary Area Project for the Institute of Social Research         at Indiana University.
The three subjective variables are measures of socioeconomic status         based on an individuals perception of their own income, occupational         prestige, and social status.