Unequal distribution of stimuli


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Finerate12
Finerate12
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Hi Dave!

I'm using Inquisit for the first time and my script is almost finished, however I do not seem to get 1 thing right. My research involves an emotion categorisation task, where participants view a picture and then have to click either A (emotion 1) or L (emotion 2). My experiment runs fine, only when I analyse the data with SPSS, I find that not all pictures are shown equally. As you will see in my script, I have 16 individuals who all show 2 emotions (32 faces) and I want each emotional expression to run twice so I have 64 trials in each block which makes a total of 128 trials. Also, I have 16 practice trials for each block so 32 practice trials in total.

I used noreplace in the script and I read somewhere on this forum that in order to counterbalance correctly '/onblockend.(expression).reset' could be used, however when I try this my script gives me an error. Could u please help me how to solve this? I use a MacBook Pro with Inquisit 5.

Kind regards!
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ResearchOP3Finerate12.iqx (426 views, 10.00 KB)
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