Millisecond Forums

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>.