Controlling the number of times a stimulus is presented over entire experiment


Controlling the number of times a stimulus is presented over entire...
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Selene_MQ
Selene_MQ
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Good morning,

I am very new to Inquisit and still not familiar with how it works. I have been trying to adapt the existing Emotional-n-back task that I got from the library, to create a simple 1-back task using 56 different images. The idea is for participants to implicitely learn these images by doing a 1-back task. So far, the script seems to be doing approximately what I want, except that when I calculated at the end the number of times each image was presented, it varied greatly (with 8 blocks, and 64 images per block, I would expect each of my 56 images to appear about 9 times, but in reality it varied between 2 and 23). I really don't know how to control this so that each image appears the same number of times across the experiment.

I have attached the script to this post, and would greatly appreciate any help you may provide,

Thank you so much in advance,
Selene
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EIB_learning_a.iqx (259 views, 42.00 KB)
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Selene_MQ - 4 Years Ago
Dave - 4 Years Ago
Selene_MQ - 4 Years Ago
Dave - 4 Years Ago
Selene_MQ - 4 Years Ago
                         You have to hardcode two things, then. - The full item order in the...
Dave - 4 Years Ago
                             Thank you very much for your answer, Dave. I generated, for each of...
Selene_MQ - 4 Years Ago
                                 You can creat lists of lists and select the list you need...
Dave - 4 Years Ago
                                     Thanks for your answer Dace. I had a look at these posts and try to...
Selene_MQ - 4 Years Ago
                                         Your /trials attributs in the blocks are all misspecified. / trials =...
Dave - 4 Years Ago
                                             Thanks a lot. The great news is that it is now working, and the most...
Selene_MQ - 4 Years Ago
                                                 Why are all your blocks using the same set? That doesn't look right at...
Dave - 4 Years Ago
                                                     P.S.: In the future, please provide all files the script requires to...
Dave - 4 Years Ago
                                                         Hi Dave, I'm so sorry, I changed this in a previous version and...
Selene_MQ - 4 Years Ago
                                                             > Even though I specified the sequence of "target/nontarget" that I...
Dave - 4 Years Ago
                                                                 Awesome, yes. I hadn't noticed that it was because it was sampling the...
Selene_MQ - 4 Years Ago
                                                                     The /responseinterrupt in the target and nontarget trials needs to be...
Dave - 4 Years Ago

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