How to have no repetitions in trial sequence by using the loop?
Hello!
I want to create a go/no-go dual task in which the no-go condition comes only in 30% of trials. With the loop, I created a factorial design to my needs. But now my problem is, that I don't want to no-go trials (30% of trials) if the previous was already a no-go.
Is there any possiblity to access the loop to check for this?
Thanks in advance.
Comments
Hi Inga,
I am not sure whether advanced loop operations could also do the trick, but I would opt for an inline_script that takes care of the creation of the trial_sequence. For example following script:
import random # zero represents 70% go, 1 represents 30% nogo all_trials = [0]*70 + [1]*30 while True: random.shuffle(all_trials) # variable that decides whether the while loop will be terminated or not break_loop = 1 for idx in range(1,len(all_trials)-1): # if the sum of two consecutive trials is 0, that means 2 nogos after each other if all_trials[idx]+all_trials[idx-1] == 0: break_loop = 0 if break_loop: breakDoes that help?
Eduard