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Dave - 11/1/2023

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Amelinq - 11/1/2023

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Amelinq - 11/1/2023

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Dave - 11/1/2023

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Amelinq - 11/1/2023

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Dave - 11/1/2023

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Amelinq - 11/1/2023

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Amelinq - 11/1/2023

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Dave - 11/1/2023

What the error message tells you is that no <trial P2irrelevants> element exists in the script, thus the blocks -- where you reference such a trial element -- cannot run. In other words, the thing you told them to run is not there.

Hi Dave,
yes understand that, but trial.P2irrelevants is defined in the script (where TRIALS PRACTICE 2 is written above). I will put the part where I define the trials here:

TRIALS PRACTICE 1
_________________________________________________________________________________________________________________________________________
<trial Pirrelevants>
/ ontrialbegin = [
  trial.Pirrelevants.resetstimulusframes();
  trial.Pirrelevants.insertstimulustime(list.irrelevants.nextvalue, 200);]    
/branch= [if(trial.Pirrelevants.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
//timeout = 1500
/beginresponsetime = 0
</trial>

<trial Ptargets>
/ ontrialbegin = [
  trial.Ptargets.resetstimulusframes();
  trial.Ptargets.insertstimulustime(list.targets.nextvalue, 200);]    
/branch= [if (trial.Ptargets.responsetext == "l")trial.wrong]
/stimulustimes = [0 = yes, no]
/validresponse = ("s","l")
/correctresponse = ("s") // yes = s-key
//timeout = 1500
/beginresponsetime = 0
</trial>

<trial Pprobes>
/ ontrialbegin = [
  trial.Pprobes.resetstimulusframes();
  trial.Pprobes.insertstimulustime(list.probes.nextvalue, 200);]    
/branch= [if (trial.Pprobes.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no; 800 = tooslow]
/validresponse = ("s","l")
/correctresponse = ("l")
//timeout = 1500
/beginresponsetime = 0
</trial>

TRIAL SOUNDS PRACTICE 1
<trial Pirrelevants_sounds>
/ ontrialbegin = [
  trial.Pirrelevants_sounds.resetstimulusframes();
  trial.Pirrelevants_sounds.insertstimulustime(list.irrelevants_sounds.nextvalue, 200);]
/branch= [if(trial.Pirrelevants_sounds.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
//timeout = 2500
/beginresponsetime = 0
</trial>

<trial Ptargets_sounds>
/ ontrialbegin = [
  trial.Ptargets_sounds.resetstimulusframes();
  trial.Ptargets_sounds.insertstimulustime(list.targets_sounds.nextvalue, 200);]
/branch= [if(trial.Ptargets_sounds.responsetext == "l")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("s") // no = l-key
//timeout = 2500
/beginresponsetime = 0
</trial>

<trial Pprobes_sounds>
/ ontrialbegin = [
  trial.Pprobes_sounds.resetstimulusframes();
  trial.Pprobes_sounds.insertstimulustime(list.probes_sounds.nextvalue, 200);]
/branch= [if(trial.Pprobes_sounds.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
//timeout = 2500
/beginresponsetime = 0
</trial>

TRIALS PRACTICE 2 PHASE (time out, wrong FB)
________________________________________________________________________________________________
<trial P2irrelevants>
/ ontrialbegin = [
  trial.P2irrelevants.resetstimulusframes();
  trial.P2irrelevants.insertstimulustime(list.irrelevants2.nextvalue, 200);]    
/branch= [if(trial.P2irrelevants.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
/timeout = 1500
/beginresponsetime = 0
</trial>

<trial P2targets>
/ ontrialbegin = [
  trial.P2targets.resetstimulusframes();
  trial.P2targets.insertstimulustime(list.targets2.nextvalue, 200);]    
/branch= [if (trial.P2targets.responsetext == "l")trial.wrong]
/stimulustimes = [0 = yes, no]
/validresponse = ("s","l")
/correctresponse = ("s") // yes = s-key
/timeout = 1500
/beginresponsetime = 0
</trial>

<trial P2probes>
/ ontrialbegin = [
  trial.P2probes.resetstimulusframes();
  trial.P2probes.insertstimulustime(list.probes2.nextvalue, 200);]    
/branch= [if (trial.P2probes.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no; 800 = tooslow]
/validresponse = ("s","l")
/correctresponse = ("l")
/timeout = 1500
/beginresponsetime = 0
</trial>

TRIAL SOUNDS PRACTICE 2 (time-out, wrong FB)
<trial P2irrelevants_sounds>
/ ontrialbegin = [
  trial.P2irrelevants_sounds.resetstimulusframes();
  trial.P2irrelevants_sounds.insertstimulustime(list.irrelevants_sounds2.nextvalue, 200);]
/branch= [if(trial.P2irrelevants_sounds.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
/timeout = 2500
/beginresponsetime = 0
</trial>

<trial P2targets_sounds>
/ ontrialbegin = [
  trial.P2targets_sounds.resetstimulusframes();
  trial.P2targets_sounds.insertstimulustime(list.targets_sounds2.nextvalue, 200);]
/branch= [if(trial.P2targets_sounds.responsetext == "l")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("s") // no = l-key
/timeout = 2500
/beginresponsetime = 0
</trial>

<trial P2probes_sounds>
/ ontrialbegin = [
  trial.P2probes_sounds.resetstimulusframes();
  trial.P2probes_sounds.insertstimulustime(list.probes_sounds2.nextvalue, 200);]
/branch= [if(trial.P2probes_sounds.responsetext == "s")trial.wrong]
/stimulustimes = [0 = yes, no, soundicon]
/validresponse = ("s","l")
/correctresponse = ("l") // no = l-key
/timeout = 2500
/beginresponsetime = 0
</trial>

Plus, it also seems that Inquisit does find the <trial P2irrelevants> at block practice2_2 but not anymore in block practice2_3, or do I see that wrong? Otherwise I would also have had the comment 'could not locate the element P2irrelevants at block practice 2_2", right?

Just attach the full script, please. It's not possible to answer your questions based on piecemeal excerpts that don't give the full picture. (To attach files, use +Insert -> Add File...

Thank you for looking into it, here's the script:

You've a mistake in that block, the trial name is broken up (see above), so the script looks for a nonexistent <trial P2irr>, which is what the error message actually says:

Oh dear... :-) Such a stupid fault.
Thank you very much, Dave! Really appreciate you taking the time.

Sorry Dave, now that I sent you the whole script maybe you could answer one more question for me (and hopefully than you will be rid of me).
All practice blocks run perfectly, but when I run a test block (<block test1>, <block test2>, ...) there are some "empty" trials. These are trials without a picture/word/sound, the only thing that shows up in this empty trial is the 'yes' and 'no'. The time out also works for these empty trials. It seems thus that only the stimulus doesn't show up.
All the trials in the blocks are exactly the same as the practice trialsin the practice blocks who work as normal (with no empty trials).
Do you have an idea?

I don't have the stimuli (images, sound files, etc.), so I couldn't possibly tell you anything about "empty" tirals. My advice to you is:
- Figure out which <trial> elements this happens with by looking at the data file. I.e. is it always <trial irrelevants>? Or is it <trial probes>? etc.
- Then double- and triple-check the respective <trial> elements, specifically the stimulus insertion logic. Take the below mistake as an example: