Problem with my experiment

lazzy
New Member

Posts: 8

Problem with my experiment Jul 1, 2021 11:40:15 GMT

Quote

Post by lazzy on Jul 1, 2021 11:40:15 GMT

Hi everyone,

I have to apologize for my poor english in advance. I hope I can make my point clear.
so right now I am trying to create an experiment. My problem is the following: I have 150 sound stimuli that my participants shall rate. Each sound stimulus is supposed to be presented in 1 of 6 different ways. So technically there are 900 possible stimuli. But every participant is supposed to rate 150 stimuli. How can I make PTK randomly choose one of the 6 possible ways for every 150 stimuli?
Do I need to make a table for every single stimulus?

I really hope the question is clear. Otherwise I will happily try to explain it a bit better. Thanks everyone in advance.

Best regards.

matia
Very experienced

Posts: 77

Problem with my experiment Jul 6, 2021 15:54:13 GMT PsyToolkit likes this

Quote

Post by matia on Jul 6, 2021 15:54:13 GMT

Hello,

you don't need a table. You can for example define a local variable set $x random 1 6 and then proceed with an if $x == 1 present stimulus such and such, etc.
I am certain there is more elegant solution, but can't think of it at the moment. Also, I dont know what does "different way" means. Try to explain how are different ways, different.

Best of luck,
Matia

The best time to plan an experiment is after you've done it.

lazzy
New Member

Posts: 8

Problem with my experiment Jul 7, 2021 15:29:34 GMT

Quote

Post by lazzy on Jul 7, 2021 15:29:34 GMT

Thanks Matia for your response.

In fact I already made a table for every stimulus but thank you anyways.
Or is there a disadvantage to use a table for every variable?
Ok what i mean by different ways is the following. My stimuli are small sentences spoken by men at two measurements. Each man has recorded three different sentences at both measurements. Each pair of sentences is one stimulus and I also reversed the measurements so I have 6 different sounds of every man.
Sorry for the poor english

matia Very experienced Posts: 77	Problem with my experiment Jul 9, 2021 15:25:26 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by matia on Jul 9, 2021 15:25:26 GMT There is nothing wrong with using table, especially once you had already made one. This is the biggest issue with the table, you have to make it
	The best time to plan an experiment is after you've done it.

Problem with my experiment

Post by lazzy on Jul 1, 2021 11:40:15 GMT

Post by matia on Jul 6, 2021 15:54:13 GMT

Post by lazzy on Jul 7, 2021 15:29:34 GMT

Post by matia on Jul 9, 2021 15:25:26 GMT