Hi, I am using GLM/UNIANOVA with a model that contains fixed and random effects (there are some specific reasons why I don’t want to use the MIXED procedure). I would like to force SPSS to use the MSError as the error term for testing the significance of some model terms. I have tried to use the syntax shown below, but I get an error message that the word ‘Error’ is not allowed in the /TEST subcommand, possibly because ‘Error’ is not a term listed in the /DESIGN subcommand. Can anyone tell me if it is possible to force SPSS to use the MSError term for testing hypotheses in GLM/UNIANOVA. UNIANOVA Sour BY Product Rep Judge /RANDOM = Rep Judge /METHOD = SSTYPE(3) /INTERCEPT = INCLUDE /POSTHOC = Product ( TUKEY ) /CRITERIA = ALPHA(.10) /TEST = judge VS Error /TEST = rep VS Error /DESIGN = Rep Judge Product Judge*Rep Product*Rep Judge*Product . Thanks, Carl Fritz