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Random pairs

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YL	YL posted 8 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 6, Visits: 49	Hi I am having trouble with randomization of stimulus pairs. The related topic I searched was from the forum Inquisit 2.0. The solution is very cumbersome. Is there any new way to do this with version 5? For example, I have stimulus pairs A (pic1, pic2; pic1,3 etc...), B(pic2, pic3; pic3,4 etc...), C(pic2, pic2; pic1,3 etc...) I want to present stimulus pairs A, B, C the fixed number of trials but random across the block. Each stimulus pair is randomly drawn from lists A, B, C. Is there a way to represent stimulus pairs within a list? Thanks!
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Dave	Dave posted 8 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 105K	+x YL - Thursday, November 16, 2017 Hi I am having trouble with randomization of stimulus pairs. The related topic I searched was from the forum Inquisit 2.0. The solution is very cumbersome. Is there any new way to do this with version 5? For example, I have stimulus pairs A (pic1, pic2; pic1,3 etc...), B(pic2, pic3; pic3,4 etc...), C(pic2, pic2; pic1,3 etc...) I want to present stimulus pairs A, B, C the fixed number of trials but random across the block. Each stimulus pair is randomly drawn from lists A, B, C. Is there a way to represent stimulus pairs within a list? Thanks! Yes, you can represent your pairs as pairs of item numbers in linked <list> elements. You then sample from those pairs randomly. See e.g. https://www.millisecond.com/forums/FindPost22774.aspx or https://www.millisecond.com/forums/FindPost22698.aspx For the different stimulus categories (A, B, or C) you'll probably want to set up separate <trial> elements (one for A, one for B, one for C) and then sample those at the <block>-level in the desired fashion. Hope this helps!
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