Specific randomization, help :C

[Javier_sotomardones]

OS: windows 10
PsychoPy version: v2022.1.3

What are you trying to achieve?:
mrt_training_1.psyexp (778.1 KB)

I apologize for my English. but i’m not a native speaker.
I am designing a study that presents images (337 for easy, 2177 for hard, 1058 for medium) divided into 3 difficulties.
I divided each difficulty into a separate routine. The stimuli are loaded through an .xlsx file (one for each difficulty).
I know how to randomize a block of routines. and forms of randomization of different levels.
what I need to do is: present the stimuli using the following sequence: 7 “easy stimuli”, 2 “medium stimuli” and 1 "hard stiumuli) in a loop for 30 minutes. The stimuli must be randomly selected from the library of stimuli that I made depending on their difficulty.

I have been looking for solutions for many days but it escapes my current knowledge.

AID!!

mrt_training_1.psyexp (778.1 KB)

[JulietaAg]

Hello,
I had a similar problem and I solved it with these two answers:

Switching between different routines (subtasks) after one trial each

OS (e.g. Win10): Win10 PsychoPy version (e.g. 1.84.x): PsychoPy 2021.2.3 Standard Standalone? (y/n) : yes What are you trying to achieve?: I want to present to present odors, pictures and words to participants in a random order. [grafik] What did you try to make it work?: I have created an experiment with three loops controlling each stimulus type. I want to present 8 odors, 8 words and 8 pictures in random order. I have created an outerloop to randomize the order of the subtasks. My probl…

Randomizing and picking a specific number of trials in a larger trial pool

Correct. How many rows does your spreadsheet have now? Have you put everything into one spreadsheet? What does your code now look like?

I hope it works for you