search for: annaz_etal_2009

...ing a covariate to the model. I am using an ANCOVA in order to determine if there is a developmental trajectory in my data; namely, I need to be able to see the F-statistic and p-values for interactions with the covariate (see p.466 onwards here [http://www.psyc.bbk.ac.uk/research/DNL/personalpages/annaz_etal_2009.pdf] if you want an example). Using ezANOVA, I can include covariates but the output does not show the F-statistic and p-values for interactions with the covariate - the main effect of the covariate is also not tested using this method. My ezANOVA model is as follows: aov.model<-ezANOVA( data...