still randomizing the position of images
I have found different ways proposed in the forum but I still can't find the solution. The problem is probably quite simple, sorry.
In a test we are administering a series of musical excerpts grouped in four emotional categories. The subject is asked to choose the category/emotion selecting one of the four faces in a sketchpad (afraid, happy, neutral, sad):
set duration 0 set description "Displays stimuli" draw image center=1 file="[face_nr]AF.tif" scale=0.5 show_if=always x=-384 y=0 z_index=0 draw image center=1 file="[face_nr]HA.tif" scale=0.5 show_if=always x=-128 y=0 z_index=0 draw image center=1 file="[face_nr]NE.tif" scale=0.5 show_if=always x=128 y=0 z_index=0 draw image center=1 file="[face_nr]SA.tif" scale=0.5 show_if=always x=384 y=0 z_index=0
Through the f1, f2, f3, f4 the subject can choose the related face/emotion.
Now I have the necessity
1) to present the [face_nr]EMOTION.tif in a random order from left to right and
2) to log the correct response.
But unfortunately I can't find a solution.
Could you suggest me a way to do that ?
Thank you very much for your attention