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Group: Forum Members
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Visits: 44
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Hello!
I am currently running an experiment in which we are randomizing the order in which participants see different blocks. Here is the expt code that I've been using:
<expt >
/ preinstructions = (Intro)
/ postinstructions = (End)
/ blocks = [1 = StartTone; 2 = panas_baseline; 3-4 = noreplace(human, dog) ]
The randomization works great, but I've come across a problem where it seems like the human block is being shown first much more often than the dog block (human has been shown first 37 times vs. 22 times for dog first). Also, there are periods in which human is shown first 7x in a row, and then the dog block is shown first the next 3x. I'm just wondering if there is any way to balance the randomization, so that the amount of times each block is shown first is a little more even and less clustered?
I appreciate any help/advice you might be able to provide with this issue!
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