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On Wed, 4 Nov 2009 09:35:55 +0000, Rik Henson <rik.henson@MRC- CBU.CAM.AC.UK> wrote: <snip> >The question is not >whether the df's are "correct", but how (and whether) you want to >partition that error into different components for each ANOVA effect >(with each component having different df's). Rik, Is this really valid, though? The texts I have on ANOVA state that using pooled errors in such designs is invalid unless one can show the relevant interactions are not significant (at some rather high p-level, like 0.2). Best, S > >Best wishes >Rik > >-- > >------------------------------------------------------- > Dr Richard Henson > MRC Cognition & Brain Sciences Unit > 15 Chaucer Road > Cambridge > CB2 7EF, UK > > Office: +44 (0)1223 355 294 x522 > Mob: +44 (0)794 1377 345 > Fax: +44 (0)1223 359 062 > >http://www.mrc-cbu.cam.ac.uk/people/rik.henson/personal >-------------------------------------------------------