[Eeglablist] LIMO: Between subjects’ ANOVAs with repeated factors - Keep getting the same error "A rrays have incompatible sizes for this operation"

Thu Jul 13 23:37:33 PDT 2023

Hi Benedetta

I do not understand what is the 2nd level design? *STUDY --> Design is 
ONLY 1st level *ie explain your experiment

This is an issue in the interface that let you think you can do that 
(listing group) but no --> in LIMO use the random effect button and do 
eg a ANOVA

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Cyril

> Dear Cyril and Marina,
> thanks a lot for your reply.
> Yes, that is precisely my situation indeed.
> I did as you suggested but keep getting the same error.
> At the first level, I have two parameters only (i.e., std and dev)
>
> And it generated the beta values for CC and DC participants for the 
> 1^st  level design (study_oddball_task_GLM..)
>
>
> For the 2^nd  level design, I specified the 2 groups
>
>
> When I have to input the beta file for 2^nd  level design 
> (...study_2^nd _level_..) for connected and disconnected group, I get 
> the following pop-up window:
>
> I don't see Connected and Disconnected groups here in the list. Is it 
> 3-4? I tried all possible combinations actually (to select 1 and then 
> 2, or 3 and then 4 etc) but it keeps saying that "the number of 
> parameter chosen (1) does not match the total number of levels (2) "
>
> Do you have any other suggestions?
>
> Thank you both very much in advance,
>
> Benedetta Cecconi
> -----
> Doctoral Candidate - FNRS ASP
>
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>
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> 11 Avenue de l'Hôpital, B34+2
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> Belgium
> ------------------------------------------------------------------------
> *From:* Marina.Pi at uv.es <Marina.Pi at uv.es>
> *Sent:* Thursday, July 6, 2023 10:54 AM
> *To:* eeglablist at sccn.ucsd.edu <eeglablist at sccn.ucsd.edu>; Cecconi 
> Benedetta <Benedetta.Cecconi at uliege.be>
> *Subject:* Re: [Eeglablist] LIMO: Between subjects’ ANOVAs with 
> repeated factors - Keep getting the same error "A rrays have 
> incompatible sizes for this operation"
> Hello,
>
> I've been working a bit with LIMO and I think I can help you.
>
> From your message, I understand that your conditions "deviant and 
> standard stimulil" are a within-participant design. Thus, when you do 
> the 1st-level analysis in LIMO, you must be sure that you have 3 
> parameters: 1. deviant; 2. standard; and 3. constant. If that is 
> correct, then you can go to the second level.
>
> In the second level, you put "2" for the n of groups, but then, you 
> put "[1 2]" for the repeated factors. These "[1 2]" refers to the 
> first two parameters of the 1st-level analysis (as we ignore the 3rd 
> parameter at this step). This way, the program should stop telling you 
> "the number of parameters chosen (1) does not match the total number 
> of levels (2)".
>
> Hope this help,
> Marina
>
>
>
> > Hello,
> >
> > I've been trying repeatedly to carry out a Between subjects’ ANOVAs 
> with repeated factors in LIMO, but I keep getting errors and I don't 
> seem to manage to make it work.
> >
> >
> > I followed the LIMO tutorial on GitHub step by step, I have a 
> situation similar to the one described: I have 2 conditions "deviant 
> and standard types of stimuli" (similar to 3 conditions "famous, 
> unfamiliar, scrambled faces" of the tutorial) and two groups of 
> participants "connected and disconnected participants" (similar to 3 
> age-based groups of the tutorial).
> >
> >
> > I first carried out the 1st-level analysis by selecting the design 
> with only dev/std conditions. As in the study creation I had divided 
> between the two groups, I got two beta files one for the first and one 
> for the second group. When I try to run a Between subjects’ ANOVAs 
> with repeated factors I input "2" for n of groups, and "2" for n of 
> repeated factors, then I choose to input beta files. Here, it opens a 
> window to select files and I select the first beta file for the 
> Connected group but then I get this window:
> >
> > [cid:1331b6b3-212e-4200-938b-4350387b1630]
> >
> >
> > and I am not sure what to select... 3 and 4 are the groups? I tried 
> selecting 3 and then entering the beta file for the disconnected group 
> and then when the window opens again I select the 4th beta parameter 
> but then it says "the number of parameters chosen (1) does not match 
> the total number of levels (2)".
> >
> >
> > In the tutorial it says to 'iteratively' insert beta files for group 
> 1 and group 2, but it does not seem to give the same window messages 
> that I get as the window attached above.
> >
> >
> > Can someone tell me where I'm going wrong?
> >
> >
> > Thanks a lot in advance for your help :)
> >
> >
> > Benedetta Cecconi
> > -----
> > Doctoral Candidate - FNRS ASP
> >
> > Coma Science 
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> >      CHU de Liège
> >
> > University of Liège, Belgium
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> > 4000-Liège (Sart Tilman)
> > Belgium
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>
> --
> ********************************
> Marina Pi Ruano
> Estudiante de Doctorado / PIF Personal Investigador en Formación
> ERI Lectura.
> Dpto. de Psicología Evolutiva y de la Educación.
> Universidad de Valencia, España.
>
> PhD Student.
> Research Unit on Reading.
> Dept. Of Developmental and Educational Psychology.
> University of Valencia, Spain.
> *******************************************
>
>
>
-- 
Dr Cyril Pernet, PhD, OHBM fellow, SSI fellow
Neurobiology Research Unit,
Building 8057, Blegdamsvej 9
Copenhagen University Hospital, Rigshospitalet
DK-2100 Copenhagen, Denmark

wamcyril at gmail.com
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