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Kwok, Oi-man; West, Stephen G.; Green, Samuel B. – Multivariate Behavioral Research, 2007
This Monte Carlo study examined the impact of misspecifying the [big sum] matrix in longitudinal data analysis under both the multilevel model and mixed model frameworks. Under the multilevel model approach, under-specification and general-misspecification of the [big sum] matrix usually resulted in overestimation of the variances of the random…
Descriptors: Monte Carlo Methods, Data Analysis, Computation, Longitudinal Studies