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Blozis, Shelley A. – Psychological Methods, 2004
This article considers a structured latent curve model for multiple repeated measures. In a structured latent curve model, a smooth nonlinear function characterizes the mean response. A first-order Taylor polynomial taken with regard to the mean function defines elements of a restricted factor matrix that may include parameters that enter…
Descriptors: Factor Analysis, Computation, Item Response Theory, Multivariate Analysis