[R] AICs from lmer different with summary and anova

Ben Bolker bolker at ufl.edu
Sun Apr 19 19:39:53 CEST 2009

hadley wrote:
>> Am I doing something wrong, here? If not, which are the real AIC and
>> logLik
>> values for the different models?

  The difference here is that summary() is using REML=TRUE and anova()
is using REML=FALSE.  It makes sense that anova (which is typically being
used to compare fixed effects) should make this assumption, but I'm not
sure whether it's documented anywhere.

  Ben Bolker

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