Hi Henrik,

I'm not sure if I follow your reply. Using fixef will give me 24 effects,
including the intercept. An ANOVA would give 7. What I need to report are
the 7 ANOVA-style effects, not the 24 me-style ones.

To make this more concrete, I have 4 types of stimuli, two different types
of tests, and 3 conditions. What the readers are going to want to know is
whether there is an omnibus interaction. Fixef reports 6 omnibus
interactions -- one for every level of the interaction. I will also need to
report the lower-level interactions and main effects. (Doesn't matter
whether these are truly interpretable in the face of a significant
higher-order interaction: It's standard practice to report them.)

I can measure the significance of the ANOVA-style omnibus interaction by
using model comparison. But that doesn't give me an effect size exactly.
(One suggestion I heard recently was to use the change in AIC as an effect
size.)

Any ideas?

Josh

	[[alternative HTML version deleted]]

