Conditions randomization

Builder
1

Hi,

I’m new on Psychopy and I have a problem with my conditions randomization.

I have two excel file with 106 rows and I want that for one participant they select rows 0:52 in nutri1.xlsx and rows 53:102 in organo1.xlsx and for another rows 53:102 in nutri1.xlsx and rows 0:52 in organo1.xlsx.

Here the excel file
nutri1.xlsx (12.6 KB)
organo1.xlsx (10.7 KB)

My first loop

loop
loop1677×775 114 KB

I think I need to insert another loop but I don’t know what I’m suppose to put in this loop to do what I want …

If someone has an idea that would be great ! Thanks :slight_smile:

(I’m French sorry for my English syntax)

2

Hello Milena,

the numbers go in Selected rows. You need to distinguish the rows for the two groups. So do something along the following lines:

if int(expInfo['participant'])%2 == 0:
    startNutri = '0'
    endNutri = '52'
    startOrga = '53'
    endOrga = '102'
else:
    startNutri = '53'
    endNutri = '102'
    startOrga = '0'
    endOrga = '52'

rowsNutri = startNutri + ":" + endNutri
rowsOrga = startOrga + ":" + endOrga

This code uses the participant number (odd, even) to generate two groups of participants. Use whatever is best for your case. Refer with $rowNutri and $rowsOrga in Selected rows of the two loops to access the relevant rows.

Best wishes Jens

1 Like
3

Hello Jens,

It works perfectly !

Thank you very much for your help :slight_smile:

Best wishes Milena