Use the <trial> element's /iscorrectresponse attribute. I.e.

/ iscorrectresponse = [trial.CSrew.response==16 && trial.CSrew.latency < 300]

Calculate their points using <values>, <expressions> and conditional logic via /ontrialend, etc. Then display the result via a <trial> element at the end of the block.

Regards,

~Dave

Hi Dave,

<trial CSrew>
/ pretrialpause= 700
/ trialcode = "CSrew"
/ validresponse = ("q", "s")
/ correctresponse = ("q")
/ responsemessage = ("q", correctmessage, 500)
/ responsemessage = ("q", correctnoise, 500)
/ errormessage = (errormessage, 500)
/ responsemode = timeout (1500)
/ stimulustimes = [0= kaderm, CSrew, CSrewS; 100 = eraserm, ?]
/ responseinterrupt = trial
/ posttrialpause= 700
/ iscorrectresponse = [trial.CSrew.response== "q" && trial.CSrew.latency < 300]
/ stimulusframes = [1 = CSrew]
/ ontrialend=[if (trial.CSrew.correct == 1) then values.score = values.score + 10]
</trial>

<values>
/ score = 0
</values>

<text reward>
/ items= ("totalcorrectcount = <% trial.CSrew.totalcorrectcount %>")
</text>

#1: 'response' returns the keyboard scancode, not the literal key value. See Tools -> Keyboard Scancodes... See the example I posted in my previous reply.

#2: You don't need a correctresponse attribute when you've defined iscorrectresponse.

#3: /responsemessage won't help. Either use /correctmessage or /branch to a separate <trial> to display your feedback stims.

Hi Dave,

I defined an ''iscorrect'' element and deleated the correctresponse element for CSrew trial. Then branched the mean latency < 350 ms. for the current CSrew trial to a another trial that delivers a correctmessage (+10) and a sound.correctnoise. Also, latency > 350 ms was branched to a nopoints message (0). So I am thankful I resolved this part.

However, one problem remains: if I add an errormessage as well for the CSrew trial and i press the correct key''q''it plays the errormessage at the same time with the correctmessage (+10). What I want is to get inquisit play the error message when I press the wrong key ''s''. How could I resolve this?

For instance, for the CSneu trial the error message is played correctly when pressing the wrong key, but for CSneu I use ''correctresponse'' while for CSrew I use ''iscorrectresponse''.

Thanks for helping me out.

Ana

*********************************

<trial  CSneu>
/ pretrialpause= 700
/ trialcode = "CSneu"
/ validresponse = ("q", "s")
/ correctresponse = ("s")
/ errormessage = (errormessage, 500)
/ responsemode = timeout (1500)
/ stimulustimes = [0= kaderm, CSneu, CSneuS; 100 = eraserm, ?]
/ responseinterrupt = trial
/ posttrialpause= 700
</trial>

<trial CSrew>
/ pretrialpause= 700
/ trialcode = "CSrew"
/ validresponse = ("q", "s")
/ errormessage = (errormessage, 500)
/ iscorrectresponse = [trial.CSrew.response== "q" && trial.CSrew.latency < 350]
/ responsemode = timeout (1500)
/ stimulustimes = [0= kaderm, CSrew, CSrewS; 100 = eraserm, ?]
/ responseinterrupt = trial
/ posttrialpause= 700
/ branch=[if (trial.CSrew.meanlatency < 350) trial.points]
/ branch = [if (trial.CSrew.meanlatency > 350) trial.nopoints]
</trial>

<trial points>
/ pretrialpause= 100
/ trialcode = "points"
/ responsemode = timeout (500)
/ stimulustimes = [0=correctmessage, correctnoise]
/ responseinterrupt = trial
/ posttrialpause= 100
</trial>

<trial nopoints>
/ pretrialpause= 100
/ trialcode = "nopoints"
/ responsemode = timeout (500)
/ stimulustimes = [0=nopoints]
/ responseinterrupt = trial
/ posttrialpause= 100
</trial>

Your /iscorrectresponse attribute is unfunctional. As stated previously, you need to use keyboard scancodes if you want to check the response.

Great, I understand it now. However, while using scancodes, the errormessage is still not played correcty. So how can I achieve this? Thanks again.  

<trial CSrew>
/ pretrialpause= 700
/ trialcode = "CSrew"
/ validresponse = ("q", "s")/ errormessage = (errormessage, 500)
/ iscorrectresponse = [trial.CSrew.response== "16" && trial.CSrew.latency < 350]
/ responsemode = timeout (1500)
/ stimulustimes = [0= kaderm, CSrew, CSrewS; 100 = eraserm, ?]
/ responseinterrupt = trial
/ posttrialpause= 700
/ branch=[if (trial.CSrew.meanlatency < 350) trial.points]
/ branch = [if (trial.CSrew.meanlatency > 350) trial.nopoints]
</trial>

Here is a drastically stripped down version of your code:

<block myblock>
/ trials = [1-10=CSrew]
</block>

<trial CSrew>
/ trialcode = "CSrew"
/ validresponse = ("q", "s")
/ errormessage = (errormessage, 500)
/ iscorrectresponse = [trial.CSrew.response== "16"]
</trial>

<text errormessage>
/ items = ("ERROR")
</text>

Error messages work perfectly fine for me. If they do for you too with this code, you need to re-check your script for mistakes in other places.

Hi Dave,

Thanks, I think I resolved the error feedback.

I have one more question: I defined values and used ontrialend in order to calculate how many points participants win during the task. But I get a message saying that ''value score'' is invalid.I have also defined a text score that is meant to be shown to participants at the end of the block, but I get a message that ''block_introgametask is invalid''. Could you help me understand what is missing? My goal is to get inquisit count the +10 points delivered during the block and then show participants a total score feedback at the end of each block.Thank you again for your patience.

Ana

*****************************************

<values>
/ score=0
</values>

<trial CSrew>
/ pretrialpause= 700
/ trialcode = "CSpun"
/ validresponse = ("q", "s")
/ errormessage = (errormessage, 500)
/ iscorrectresponse = [trial.CSrew.response== "16"]
/ responsemode = timeout (1500)
/ stimulustimes = [0= kaderm, CSrew, CSrewS; 100 = eraserm, ?]
/ responseinterrupt = trial
/ posttrialpause= 700
/ branch=[if (trial.CSrew.meanlatency < 350) trial.points]
/ branch = [if (trial.CSrew.meanlatency > 350) trial.nopoints]
/ ontrialend=[values.score = values.score + 10 * trial.CSrew.correct]
/ ontrialend=[if (trial.CSrew.correct == 1) values.score = values.score + 10]
</trial>

<text score>
/ items = ("Total score: <% block_introgametask %>")
/ position = (50%, 5%)
</text

This is presumably due to a typo somewhere in your script. Inspect the element the error message is thrown for.

This does not make sense. You don't want a <text> element to try and display a <block> element. You want the <text> element to display <%values.score%>, you want a <trial> to present said <text> element and a <block> to run said <trial>.

Hi Dave,

Ok, so now I tried to define those elements according to your advice. If I include two trial attributes inside the block, I receive a warning saying that the trial attribute of the block element is unassigned and could not be located.

<values>
/ score=0
</values>

<text feedback>
/ items= ("value = <% values.score %>")
</text>

<trial feedback>
/ pretrialpause= 300
/ trialcode = "feedback"
/ responsemode = timeout (2500)
/ stimulustimes = [0=feedback]
/ responseinterrupt = trial
/ posttrialpause= 300
</trial>

**********  blocks *************************
<block intro_gametask>
/ screencolor = (0,0,0)
/ preinstructions = (intro_gametask)
/ trials = [1-12 = random (CSneu, CSpun)]
/ trials = [1 = (feedback)]
/ blockfeedback = (meanlatency, correct)
</block>

However, if I include the feedback inside the same trial attribute of the block (see below), the task plays BUT I do not get any feedback score page at the end of the block.

<block intro_gametask>
/ screencolor = (0,0,0)
/ preinstructions = (intro_gametask)
/ trials = [1-12 = random (CSneu, CSpun) feedback]
/ blockfeedback = (meanlatency, correct)
</block>

What important step am I missing? Thank you again.

Ana

You've defined the /trials attribute twice. That's not allowed. The second definition has invalid syntax, too. See the docs for correct syntax examples.

The syntax here is also invalid. It should be

/ trials = [1-12 = random (CSneu, CSpun); 13 =  feedback]

obviously. I recommend you revisit the tutorials included in the Inquisit documentation to get more familiar the basic elements and their correct syntax.

Regards,

~Dave

Perfect, I ran the task again and now it displays the score feedback :) Sure, I will study the tutorials more carefully. Thanks a lot for your guidance!

Ana

Hi again Dave,

Uff my happiness did not last long as I have just realized that the score displayed is the sum of scores for all trials, and not only for the trials when participants win 10 points as a result of their fast RTs. So if I run the 12-trial block, I end up with a score of -120, although I have just lost 20 points during the task (as displayed during the trial feedback). So what element shall I use so that the final score displayed sums up only my correct responses during the task and not all my responses? I would appreciate if you can point me in a direction and sorry for bothering you with my beginner questions.

Regards,

Ana

It's not a matter of display. Your calculations must be wrong. Check them.

Hi Dave,

I corrected the calculations and managed to provide paricipants with a block feedback about their score. Now I would like them to receive also a feedback page that  informs them about the total number of points won across the 3 blocks. How can I achieve this? Thank you.

Ana

**********  blocks ****************************

<block test_gametask1>
/ screencolor = (0,0,0)
/ preinstructions = (testfase_gametask1)
/ trials = [1-12 = random (CSneu, CSpun); 13 = feedback]
/ blockfeedback = (meanlatency)
</block>

<block test_gametask2>
/ screencolor = (0,0,0)
/ preinstructions = (testfase_gametask2)
/ trials = [1-12 = random (CSneu, CSpun); 13 = feedback]
/ blockfeedback = (meanlatency)
</block>

<block test_gametask3>
/ screencolor = (0,0,0)
/ preinstructions = (testfase_gametask3)
/ trials = [1-12 = random (CSneu, CSpun); 13 = feedback]
/ blockfeedback = (meanlatency)
</block>

In the same way you provide the per-block feedback. Set up <values>, <text>, <trial> and <block> elements displaying the relevant metrics and run the resulting block after your 3 game blocks.