Hello, I'm using this command to analyse changes in brain volume:
mod1<-aov(Volume~Sex*Lobe*Tissue+Error(Subject/(Lobe*Tissue)),data.vslt) I'm comparing males/females. For every subject I have 8 volume measurements (4 different brain lobes and 2 different tissues (grey/white matter)). But I read that aov() results change with the order of the factors (type I anovas). So I would like to use lmer() with type II, but I'm struggling to find the right syntaxis... How should I write the model I use with aov() using lmer()?? Specifying Subject as a random effect is straightforward mod2<-lmer(Volume~Sex*Lobe*Tissue+(1|Subject),data.vslt) but I can't figure out the /(Lobe*Tissue) part... Thank you very much in advance! roberto ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.