[R-sig-ME] within subjects, 3 conditions, 3 lines

[marKo]

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I think that you have correctly identified the problem.

Cheers,

Marko



On 01/21/2015 09:16 AM, Stanislav Aggerwal wrote:
> I will attempt an answer to my own question. Possibly the reason I
> got the same answer with the 3 methods is that my simulation was
> wrong. It simulated the responses as:
> 
> y<- (cond=="a")*(a1 + a4*x) + (cond=="b")*(a1+a2 + (a4+a5)*x) + 
> (cond=="c")*(a1+a3 + (a4+a6)*x) + rnorm(5*3*nsubj,mean=0,sd=.5)
> 
> This contains the intercepts and slopes which are unique to each
> subject and randomly sampled from some population values. However
> the term: rnorm(5*3*nsubj,mean=0,sd=.5) is wrong because it says
> the errors are independent. Instead they should be correlated
> within each subject.
> 
> I will give that a go.
> 
> Stan
> 
> [[alternative HTML version deleted]]
> 
> _______________________________________________ 
> R-sig-mixed-models at r-project.org mailing list 
> https://stat.ethz.ch/mailman/listinfo/r-sig-mixed-models
> 

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