[R] low-variance warning in lmer

Gregor Gorjanc gregor.gorjanc at bfro.uni-lj.si
Sat Nov 25 00:15:58 CET 2006

Ben Bolker <bolker <at> zoo.ufl.edu> writes:
>   For block effects with small variance, lmer will sometimes
>   My question is: what should I suggest to students when this
> situation comes up?  Can anyone point me to appropriate references?
> (I haven't found anything relevant in Pinheiro and Bates, but
> I may not have looked in the right place ...)

Gelman has quite some similar examples. Take a look at his schools example in
the Bayesian book.


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