[R] testing for significance in random-effect factors using lmer

[Eduardo.Garcia@uv.es]

Hi, I would like to know whether it is possible to obtain a value of 
significance for random effects when aplying the lme or related 
functions. The default output in R is just a variance and standard 
deviation measurement.

I feel it would be possible to obtain the significance of these random 
effects by comparing models with and without these effects. However, 
I'm not used to perform this in R and I would thank any easy guide or 
example.

Thanks.
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Eduardo Moisés García Roger

Institut Cavanilles de Biodiversitat i Biologia
Evolutiva - ICBIBE.
Tel. +34963543664
Fax  +34963543670