Change AAT script Wiers 2009 4 practice items


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poleraze
poleraze
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Hello everyone,

Im using the uploaded AAT script from Wiers et al. 2009 .
In our testing we have to groups healthy and unhealthy food. Every eatable object has an uneatable match that looks similar.
People will be instructed to pull eatable items and push not eatable items and we will look at the difference in RT for healthy and unheqlthy snacks.
The problem now is that i need 4 practice items but i dont understand the value picking. I thought i could write that the value should be greater than 2 and for the other group smaller than 2
so i changed
=> / ontrialbegin = [values.selectpracticepicture = 1 ]
to
/ ontrialbegin = [values.selectpracticepicture <= 2 ]
and
/ ontrialbegin = [values.selectpracticepicture >= 2 ]
but that doesnt work.
Why? (Question1)

My next idea was to creat a list and copy the aat (target) selection. But then i have to change the whole script...
Question 2 = How do i tell a list from which itempool it has to select its items? I have two, target and practice.

Question 3 Does anyone have a solution that will help me ?

Thank you all






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pull-essbar.zip (276 views, 10.00 KB)
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