Tuesday, July 30, 2013

Latent Change Scores can model the Latent Growth Linear Model

This is the setup of the LCS constant change model that replicates the LGM linear model, first shown by
McArdle, J. J. (2001). A latent difference score approach to longitudinal dynamic structural analyses: a festschrift in honor of Karl Jöreskog. In R. C. K. G. Jöreskog, S. H. C. D. Toit & D. Sörbom (Eds.), Structural equation modeling: Present and future (pp. 342–380). [:353]

Also, there is a simple way to replicate a 2 wave LGM model as a LCS with constant change, the setup below does not look simple because I chose to specify EVERY parameter possible:

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