sorry, it should say "I copied the model from the car manual.." more precise, I did the same as there in doing the lm(cbind()) call first an then the av.ok, etc. -- View this message in context: http://n4.nabble.com/repeated-measures-anova-car-package-tp1573721p1577432.html Sent from the R help mailing list archive at Nabble.com.