Assign each participant to a trial list and a row from diffrent routine

Builder
1

OS (e.g. Win11):
PsychoPy version (e.g. 2025.1.1):
Standard Standalone Installation? (y/n) If not then what?: y
Do you want it to also run online? (y/n) y
What are you trying to achieve?:

I have an experiment that I want to run online via Pavlovia. In this experiment, I have two routines. The first routine is for 6 trial lists. The second routine is not a trial; it has one Excel sheet with 30 rows that each participant should access, with only one row per participant, and the rows do not appear again for other participants. The rows should be in sequences not random.

I want something like: participant 1 gets trial list 1 from the first routine and row 1 from the second routine, and participant 2 gets trial list 2 from the first routine and row 2 from the second routine….participant 6 gets trial list 6 from the first routine and row 6 from the second routine. Once it’s done, it loops again for only the trial list: participant 7 gets trial list 1, row 7; participant 8 gets trial list 2, row 8; and so on until the last participant, which should get trial list 6 and row 30.

What did you try to make it work?:

I used the participant number to assign the trials and the rows to each participant, but it didn’t work

How to achieve this in PsychoPy builder? It would be appreciated if you could help to set up this

2

Hello @Halimah_Alalawi

Do you mind showing us how you tried to achieve this?

Best wishes Jens

3

Hello Jens,

Thanks for your response

I have tried a code component in “Begin experiment”

The first routine code is

participant_id = int(expInfo[‘participant’])

list_number = (participant_id - 1) % 6 + 1

condition_file = list_ + str(list_number ) + ‘.csv’

and in the second routine, I used the following code

participant_id = int(expInfo[‘participant’])

card_index = (participant_id - 1) % 30 + 1

selected_file = ‘cards’ + str(card_index) + ‘.xlsx’

The issue is that PsychoPy’s default setting for assigning participants is random, and I want them sequenced. Also, in the second routine, when I typed the $row - 1 in Selected rows, it didn’t work.