Currently working on a categorization task in which people have to indicate for every picture of a face whether the face has a sad or an angry emotional expression.
The experiment is working, but after collecting data in monkey mode I found out that in both testblocks (4 and 7) the pictures are not shown as I want them to.
Within each block, the right number of pictures is shown (128 trials per block). Per block and within each category of pictures (16 categories), I want every picture to be shown 8 times. However, as of yet, this is not the case: per category, some pictures are shown 10 times, others 7, others 9.
I have tried several things but I can't seem to get it to work the way I want it to.
I don't have a lot of experience, so suggestions would be of great help!
I added parts of the script below.
<item Male_Black_Sad.l>
/1 = "38M_SA_C.bmp"
/2 = "39M_SA_C.bmp"
/3 = "42M_SA_C.bmp"
/4 = "41M_SA_C.bmp"
</item>
<picture Male_Black_Sad.l>
/items = Male_Black_Sad.l
/ position = (50,50)
/ size = (375, 375)
/ select = noreplace
</picture>
<trial Male_Black_Sad_l>
/ pretrialpause = 200
/ stimulustimes=[0=fixation, reminder_left, reminder_right; 300=Male_Black_Sad.l; 500=blank]
/ correctresponse = ("a")
/ errormessage = true(error,400)
/ validresponse = ("a", "l")
</trial>
<block AngrySad>
/ preinstructions = (test, test_AngrySad)
/ trials = [1-128 = noreplace(Female_Black_Angry_l, Female_White_Angry_l, Male_Black_Angry_l, Male_White_Angry_l, Female_Black_Sad_r, Female_White_Sad_r, Male_Black_Sad_r, Male_White_Sad_r)]
/ onblockbegin = [values.reminder_left = "Angry"; values.reminder_right = "Sad"]
</block>
<expt>
/ preinstructions = (Instructions1, Instructions2, Instructions3)
/ blocks = [1 = Prime_Black_vs_White; 2 = Instructions4; 3 = AngrySad_practice; 4 = AngrySad; 5 = between; 6 = SadAngry_practice; 7 = SadAngry; 8 = end]
/ subjects = (1 of 4)
</expt>