[R] ANOVA/ANCOVA Repeated Measure Mixed Model

2011-10-07 Thread Nick GH
Hello, I am trying to test some results I have for significance. It has been recommended that I use R and I am completely new to this. Set-up: Groups: two groups of 8 subjects (16 total) Two conditions: alert and passive Measurements: responses for three different stimuli (A, B, and C)

Re: [R] ANOVA/ANCOVA Repeated Measure Mixed Model

2011-10-07 Thread Nick GH
Hi Daniel, Thanks for your response, I don't completely follow. I also should have split this into two questions. Regarding my first question: Daniel Malter wrote: You are modeling Condition * Stimulus * Group as fully interacted fixed effects... A simple random effect for the individual

Re: [R] ANOVA/ANCOVA Repeated Measure Mixed Model

2011-10-06 Thread Daniel Malter
You are modeling Condition * Stimulus * Group as fully interacted fixed effects. I do not actually think that you would need a complex random effect structure for this. A simple random effect for the individual might suffice. You could try to model this with lmer (in the lme4 library) and inspect