[R] equivalent of repeated measures anova using lmer

[Ben Bolker]

asudar <aruna.sudarshan <at> gmail.com> writes:

> 
> I am trying to run a linear mixed effects model similar to the 2*2*2 anova
> design. My DV is reaction time and fixed factors are time (pre vs.
> post:within-subject), condition (congruent vs. incongruent: within subject)
> and stimulation (vertex vs. DLPFC: between subject)
> My concerns are:
> a)I have very few participants: 7 in the vertex condition and 7 in the
> DLPFC condition.
> b)2 out of the 7 participants participated in both vertex and DLPFC
> condition.
>  How do I compute a nested lmer model with reaction time as DV and time,
> condition and stimulation as factors? and how do i account for random
> intercepts and slopes with few number of participants?
> Thanks for all the help

  You'll probably get more useful answers to this question on
the r-sig-mixed-models at r-project.org mailing list.

   7 participants is small but doesn't seem horribly small
(but it might preclude estimating a full random-slopes model).
You'll get more information on r-sig-mixed-models ...