A distribution free approach for analysis of two-level structural equation model
Computational Statistics & Data Analysis
Consistency property of elliptical probability density functions
Journal of Multivariate Analysis
Asymptotics of estimating equations under natural conditions
Journal of Multivariate Analysis
Journal of Multivariate Analysis
An Introduction to Multilevel Modeling Techniques
An Introduction to Multilevel Modeling Techniques
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Data in social and behavioral sciences are often hierarchically organized. Multilevel statistical methodology was developed to analyze such data. Most of the procedures for analyzing multilevel data are derived from maximum likelihood based on the normal distribution assumption. Standard errors for parameter estimates in these procedures are obtained from the corresponding information matrix. Because practical data typically contain heterogeneous marginal skewnesses and kurtoses, this paper studies how nonnormally distributed data affect the standard errors of parameter estimates in a two-level structural equation model. Specifically, we study how skewness and kurtosis in one level affect standard errors of parameter estimates within its level and outside its level. We also show that, parallel to asymptotic robustness theory in conventional factor analysis, conditions exist for asymptotic robustness of standard errors in a multilevel factor analysis model.