LogL with additional random effect
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LogL with additional random effect


I have recently run some analyses which were:-
 individual animal model
 mean + animal + group effects (group fixed)

I then added in a permanent environmental effect
due to dams. For a number of the traits, the ide(dam)
effect went to zero. However, the LogL was slightly
lower than for the initial analysis, and the animal
genetic variance increased. I tried running the analyses
further with !continue, but nothing changed.

I presume this is a result of fixing the variance at
the parameter boundary. Should I be concerned? If I
saw these results in a paper I would wonder about them.