How to Present a Random Subset of Stimuli
I am trying to create a Single Category IAT on OpenSesame, rating an ethnicity as good or bad. I am following the ratio of stimuli recommended by Karpinski & Steinman (2006), where when the category is on the same response key as "good", the ratio of stimuli presented should be:
7 good : 7 ethnicity : 10 bad, which yields a total of 24 trials.
I have a list of 10 stimuli each for good, bad, and "category", and I want to present a random 7 stimuli from the pool of 10 stimuli for the good and ethnicity. How can I do this in OpenSesame?
Thanks in advance for the help!