Adding questions/pictures to same <item> element


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crfcaio
crfcaio
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Hello Inquisit community,


Part of my experiment involves seeing a series of three pictures that come at different speeds forming a video. After that, participants are supposed to answer five questions, including Likert and Sliding/VAS scales. I have been able to successfully add the pictures into the trials and having each one going at different speeds in sequence.


What my graduate student mentor wanted me to do was to include both the pictures and the questions into an <item> element; this way, we can do all 24 series of picture sequences + five questions in one item.


Is it possible with the way my script is looking? I'm not sure where to start, though; if i try to add pictures to my <item practiceacc>, the experiment won't run, accusing that it can't find practiceacc (?).


=========================


*********


Pratice Video Stimuli


*********


<picture practiceint1>


/items = ("3p_i2_bathit_frame001_int_blue.bmp")


</picture>



<picture practiceint2>


/items = ("3p_i2_bathit_frame002_int_blue.bmp")


</picture>



<picture practiceint3>


/items = ("3p_i2_bathit_frame003_int_blue.bmp")


</picture>



<picture practiceacc1>


/ items = ("bowling_acc_1_orange.bmp")


</picture>



<picture practiceacc2>


/ items = ("bowling_acc_2_orange.bmp") 


</picture>



<picture practiceacc3> 


/ items = ("bowling_acc_3_orange.bmp")


</picture>



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


Items


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



<item practiceacc1>


/1 = "bowling_acc_1_orange.bmp"


/2 = "bowling_acc_2_orange.bmp"


/3 = "bowling_acc_3_orange.bmp"


</item>



<item practiceint1>


/1 = "3p_i2_bathit_frame001_int_blue.bmp"


/2 = "3p_i2_bathit_frame002_int_blue.bmp"


/3 = "3p_i2_bathit_frame003_int_blue.bmp"


</item>


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


Intro Page


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


<page practice1>


^Before we continue to the next part of the experiment, we will now ask that you correctly identify the social status of the next 10 images. 


^To proceed to the next part of the experiment, you must get a score of 100%. 


^Please press any ENTER when you are ready to continue.


</page>



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


Trials


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



<trial practiceacc1>  


/ validresponse = (57)


/ stimulustimes = [0=practiceacc1;1000=practiceacc2;1200=practiceacc3]


</trial>



<trial practiceint1>  


/ validresponse = (57)


/ stimulustimes = [0=practiceint1;1000=practiceint2;1200=practiceint3]


</trial>



<block practicevideo>


/ trials = [1-6 = noreplace (practiceacc1, practiceint1)]


/ preinstructions = (practice1)


/ recorddata = true


</block>


Dave
Dave
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What my graduate student mentor wanted me to do was to include both the pictures and the questions into an <item> element; this way, we can do all 24 series of picture sequences + five questions in one item.


No. You should not mix stimulus types within a given <item> element. You need to use separate elements and define proper dependencies between them. See the "How to present stimulus pairs" topic in the documentation for details.


crfcaio
crfcaio
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Hi Dave,


I read the document and apparently the property /select (which I was thinking in using to direct to the likert + visual analogue scale questions after the "videos") only applies to <text>, <likert>, <surveypage>, and <trial> elements. Should I use <surveypage> instead of <trial> for this section of my experiment?


Dave
Dave
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Only *stimulus* elements (<text>, <picture>, <video>, etc.) have a /select attribute -- those are the elements you *select from* and what you specify via /select determines *how* that selection works. <trial>, <surveypage>, etc. do not have any such attribute, so I'm not sure what your actual question is and where you might be stuck.


crfcaio
crfcaio
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Well, my question is: how can I make the questions my participants have to answer come right after the video is shown? You suggested me to look at the "How to present stimulus pairs" document but it didn't help me.



Thank you for all your help, by the way!


Dave
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Set up <video> and <text> elements as needed (<video> for your videos, obviously, <text> for your questions). Have a <trial> or <likert> element display those elements in whatever fashion / at whatever time you wish via the /stimulustimes attribute. You will find all of those basics covered in the tutorials included in the documentation.


If your <video>s vary in length, you can set up a separate <trial> to present them and immediately follow that up by another <trial> or <likert> displaying the question / collecting a response.


crfcaio
crfcaio
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What if my videos are actually images? They're three images in a sequence on different speeds (1000ms, 200ms, 1000ms).


Dave
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Same thing, but you may want to make use of setstimulustime() and/or insertstimulustime() functions.


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