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Covariance Structures Under Polynomial Constraints: Applications to Correlation and Alpha-Type Structural Models

University of California Los Angeles

Sik-Yum Lee

The Chinese University of Hong Kong

This paper provides methods for the estimation of covariance structure models under polynomial constraints. Estimation is based on maximum likelihood principles under constraints, and the test statistics, parameter estimates, and standard errors are based on a statistical theory that takes into account the constraints. The approach is illustrated by obtaining statistics for the squared multiple correlation, for predictors in a standardized metric, and in the analysis of longitudinal data via old and new models having constraints that cannot be obtained by standard methods.

Key Words: Covariance structures • structural equation models • multiple regression • multiple correlation • factor analysis • structural models

Journal of Educational and Behavioral Statistics, Vol. 8, No. 3, 207-222 (1983)
DOI: 10.3102/10769986008003207


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