Hi there,
 
I asked around and our consensus is:
 
Anything where the residual variance is fixed - so you could have it with a normal distribution if you 'knew' what the residual variance was (e.g. from other data sources).
 
But, in general, just the binomial and poisson
 
Many thanks, we greatlty appreciate the work going into lme4,  
 
Colin.

________________________________

From: r-sig-mixed-models-bounces@r-project.org on behalf of Douglas Bates
Sent: Tue 09/03/2010 22:05
To: R-mixed models mailing list
Subject: [R-sig-ME] number of levels of grouping factor == number ofobservations



For what families in a generalized linear mixed model should a
grouping factor be allowed to have as many levels as there are
observations?  Just the binomial and the poisson or everything except
the gaussian family or ...?

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