Pseudo-random Trial Presentation


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ivy.c
ivy.c
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Posts: 11, Visits: 148
Hello, 

I’m currently trying to create a pseudo-random order of the trials I present in a block (pasted below). Specifically, I would like the trials to be presented where there are no more than 5 consecutive “AX_Short_No” trials or two consecutive trials of another type (“AY_Short_No”, “BX_Short_No”, “BY_Short_No”).

<block shortnoreward_final>
/ preinstructions = (intro2)
/ trials = [1-100 = noreplace(AX_Short_No,AX_Short_No,AX_Short_No,AX_Short_No,BX_Short_No,AY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No,BY_Short_No)]
/ onblockend = [list.corrRT_baseline_short.sort(false,false);    
values.index = 3;
values.cutoff_RT = list.corrRT_baseline_short.item(values.index);
]
</block>

Any help regarding this would be much appreciated! Thank you!
GO

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