It is the case for qdec that a factor cannot have more than two levels. You'll have to use the "command line" stream, creating an FSGD file, running mris_preproc, mri_surf2surf, mri_glmfit, and mri_glmfit-sim. See the wiki

On 03/08/2016 05:29 AM, Lisa Delalande wrote:

Hello everyone,

I've got some problems with qdec. I have .levels with more than 2 factors. For example a "grpe.levels" with three factors : children (enfant), adults (adultes) and nothing (rien). But if I want to exclude some subjects like children qdec doesn't work anymore (attachment : error message). Is that possible a .levels can not have more than two factors ? Or the problem came from anything else ?

Thanks in advance for your help ! Best regards,

Lisa

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