| Bollen {OpenMx} | R Documentation |
Data set used in some of OpenMx's examples, for instance WLS. The data were reported in Bollen (1989, p. 428, Table 9.4) This set includes data from 75 developing countries each assessed on four measures of democracy measured twice (1960 and 1965), and three measures of industrialization measured once (1960).
data("Bollen")
A data frame with 75 observations on the following 11 numeric variables.
y1Freedom of the press, 1960
y2Freedom of political opposition, 1960
y3Fairness of elections, 1960
y4Effectiveness of elected legislature, 1960
y5Freedom of the press, 1965
y6Freedom of political opposition, 1965
y7Fairness of elections, 1965
y8Effectiveness of elected legislature, 1965
x1GNP per capita, 1960
x2Energy consumption per capita, 1960
x3Percentage of labor force in industry, 1960
Variables y1-y4 and y5-y8 are typically used as indicators of the latent trait of “political democracy” in 1960 and 1965 respectively. x1-x3 are used as indicators of industrialization (1960).
The sem package (in turn, via pers. comm Bollen to Fox)
Bollen, K. A. (1979). Political democracy and the timing of development. American Sociological Review, 44, 572-587.
Bollen, K. A. (1980). Issues in the comparative measurement of political democracy. American Sociological Review, 45, 370-390.
Bollen, K. A. (1989). Structural equation models. New York: Wiley-Interscience.
data(Bollen) str(Bollen) plot(y1 ~ y2, data = Bollen)