Randomisation

Manuya

All my participants are presented with 5 statements and the option to choose between two plans of action (M or Q). All this was entered into 5 sketchpads, followed by a keyboard response (M;Q) and a logger. I did this in 5 block loops, within a block sequence.

I've got 2 questions :
1. How do I randomise these 5 statements ? (if in Python script, please help)
2. Would there be a way to counterbalance the two plans of action (two possible responses) ? As I defined a key to be pressed on beforehand (M or Q), it's rather useless, if I would write eg.
Statement 1 = blablabla
Choose M = blablabla
Choose Q = blablabla

Statement 2 - blablabla
Choose Q = blablabla
Choose M = blablabla

The counterbalancing would be rather obvious and there's no point. Is there another way of doing it ? Please note that I always need the statement and the two options to choose from on the same page. It's not a memory task.

Cheers.

DahmSF

Hi Manuya,

you do not necesarily need an inline_script for randomization.
1. Put your options into a loop. And randomize it.
2. An easy way would be to make two images with the questions and put them into the loop as well.
Another easy way is to put a variable in place of the position in the script. Insert this variable in your loop.

So far. Hope this helps.
Stephan

Manuya

Hi Stephan,

Thank you but I need more help.

I understand what you say about putting a variable in place of the position in the script. However, within this context, I didn't quite understand how my participants would be able to make a selection as they also need to choose between two options in relation to a main statement. Therefore, I decided to use the multiple choice forms. Another advantage of doing this is that I don't need to define a key on beforehand (M or Q, as I wrote earlier) to differentiate between the two options.

THE WAY THE TABS LOOK : The multiple choice forms (+ a logger) were put in a 'trial', which is in a 'block loop' (there are 5 of them). All 5 'block loops' are in a 'block sequence', which is in a 'loop'. Hope this makes sense.

I still have these questions :
1. The loops (all of them actually) are set at random, so I presume (and hope) it'll do this. Just as a piece of info, when I do a test run, it's not doing it - they are just sequential and run from 1 to 5.
Little remark - I can't test it using the 'run in window' button. I use Mac and (as I have also read on this forum), this results in a computer crash (this was my case too).
2. So, within my multiple choice form, there is a statement (what you call question) and there are 2 responses. How do I counterbalance these 2 responses ?

NOTE - If at all relevant, my experiment has a mixed design. The first part is between. The second part (the part we are discussing here) is within. In short, the statements need to be randomised and the responses counterbalanced.

Looking forward to reading your input (take into account I have a very limited understanding of this program).

Manuya

Manuya

I'll simplify; based on the above, can someone please let me know how to randomise 5 statements and counterbalance the two responses to each statement ?