[R-sig-ME] Random vs. fixed effects

S Ellison S.Ellison at lgc.co.uk
Mon Apr 26 17:35:06 CEST 2010



>>> Ben Bolker <bolker at ufl.edu> 23/04/2010 19:11:45 >>>
>  Given that it is a reasonable *philosophical* position to say
'treat
>philosophically random effects as random no matter what, and leave
them
>in the model even if they don't appear to be statistically
significant',
>and given that with small numbers of random-effect levels this
approach
>is likely to lead to numerical difficulties in most (??) mixed model
>packages (warnings, errors, or low estimates of the variance), what
>should one do?  

A bigger experiment.

Steve E

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