Dear all,
does anybody knows how to fit a random effects model with an interaction
between a crossed and a nested effect? I have an experiment with 4 factors:
A is crossed, B is nested within A, C is crossed with A and B and D is
nested within C. How should I specify the full model including all possible
interactions?

resp ~ (1|A/B) + (1|C/D) + (1|A:C) + ......

That is: how to specify interactions between: 1) A and D in C , 2) C and B
in A??

Hope I was clear enough...

thanks
niccolo

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