Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-20 Thread ONKELINX, Thierry
11:24 > Aan: ONKELINX, Thierry > CC: r-help@r-project.org > Onderwerp: Re: [R] Mixed Effects Model on Within-Subjects Design > > Hi Thierry, > > Thank you so much for your response! I ran the model and I > obtained some strange results (see below). Is there a simple >

Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-20 Thread Dave Deriso
acted from a given body of data. > ~ John Tukey > > >> -Oorspronkelijk bericht- >> Van: r-help-boun...@r-project.org >> [mailto:r-help-boun...@r-project.org] Namens Dave Deriso >> Verzonden: donderdag 20 mei 2010 9:27 >> Aan: David Atkins >> CC:

Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-20 Thread ONKELINX, Thierry
help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] Namens Dave Deriso > Verzonden: donderdag 20 mei 2010 9:27 > Aan: David Atkins > CC: r-help@r-project.org > Onderwerp: Re: [R] Mixed Effects Model on Within-Subjects Design > > Hi Dave, > > Thank you for your

Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-20 Thread Dave Deriso
Hi Dave, Thank you for your helpful advice. I will take a look at the multicomp package. I was wondering where the lme() function outputs the interaction between condition*difficulty? Below is the output to the code I had originally sent. Which one of these is condition*difficulty? Fixed effect

Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-20 Thread Dave Deriso
Hi Dave, Thank you for your helpful advice. I will take a look at the multicomp package. I was wondering where the lme() function outputs the interaction between condition*difficulty? Below is the output to the code I had originally sent. Which one of these is condition*difficulty? Fixed effect

Re: [R] Mixed Effects Model on Within-Subjects Design

2010-05-19 Thread David Atkins
Dave-- Given that you want all comparisons among all means in your design, you won't get that directly in a call to lme (or lmer in lme4 package). Take a look at multcomp package and its vignettes, where I think you'll find what you're looking for. cheers, Dave -- Dave Atkins, PhD Research

[R] Mixed Effects Model on Within-Subjects Design

2010-05-19 Thread Dave Deriso
Dear R Experts, I am attempting to run a mixed effects model on a within-subjects repeated measures design, but I am unsure if I am doing it properly. I was hoping that someone would be able to offer some guidance. There are 5 independent variables (subject, condition, difficulty, repetition) and