Hi,
lme or lmer can be used when the multivariate variables are structured in
the same way as if only a univariate variable was analyzed. A set of dummy
codes need to be created to "flag" the outcomes accordingly.
For more details, see e.g:
Doran, H., Lockwood, J., 2006. Fitting value-added models in R. Journal of
Educational and Behavioral Statistics 31 (2), p. 205-230.
Cheers,
Mareike
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Mareike Kohlmann
Department of Statistics
Ludwig-Maximilians-University Munich
Germany
E-Mail: mareike.kohlmann at stat.uni-muenchen.de