Randomising font size in each trial

Coding
1

I’m trying to design a go/no-go task (SART). Right now I have a number (1-9) being presented on screen and participants are asked to respond to every number besides 3 with a keyboard press (space).

In every trial, when the number is presented, I would like for each number size to vary by randomly choosing a font size. What is the best way to do this?

I have tried to use the shuffle function with a subset of font sizes with the following code:

fontSize = [[0.05], [0.08], [0.1],[0.6],[0.3]] shuffle(fontSize) # randomise the order on each trial

and in the text component under letter height: fontSize.pop()

But have received the following error:

Screen Shot 2020-09-23 at 3.48.05 pm
Screen Shot 2020-09-23 at 3.48.05 pm1814×650 226 KB

Thanks!

2

You are putting lists within your list. e.g. Just specify the list as [0.05, 0.08, 0.1, 0.6, 0.3]. That way you pop out a number from the list, rather than another list.

Also you only need to shuffle the list once, rather than on each trial.

3

Such an easy fix! Thanks so much for your timely assistance @Michael!