I am fitting a series of models using lmer(). I'd like to be able to manipulate the coefficients generated by ranef() to facilitate comparisons between models, and I can't figure out how to do it. (This is probably old news for most of you, but the problem is that although the ranef() output is in two columns, it's apparently a list. After I'd learned I couldn't use as.data.frame(ranef(model1)) in R, I was still surprised to see the group ID and the coefficient appear in a single cell when I used write.table to look at the output in Excel.) I'd appreciate any ideas as to how I can generate a list of coefficients without the accompanying group ID numbers. Jamie [[alternative HTML version deleted]]