|
Group: Forum Members
Posts: 1,
Visits: 5
|
Hi,
I'm making an auditory task. I want to present 72 trials, half (36) control conditions and half (36) experimental conditions. I have 4 control conditions and 3 experimental conditions. In <sounds> I have have repeated each of the four control conditions 9 times so that there are 36 stimuli in total and I have repeated each of the experimental conditions 12 times so that there are 36 stimuli in total. I have the select mode as noreplace. In blocks I have put /trials = [1-72 = noreplace(control, experimental).
I do get 36 control trials and 36 experimental trials but the stimuli aren't always presented the correct number of times. Sometimes the control conditions are presented for example 8, 10, 9 times rather than 9, 9, 9 times.
Is there a way to overcome this?
Thanks, Anna
|