Hi,
I am trying to build a continuous response task to measure working memory precision. I need to randomise the number of stimuli (circles) presented on screen, their colours, and their locations on a given trial, before presenting one of these in the centre of the screen when the participant is required to click where that item first appeared. I have coded this in Python and Matlab - and both have worked fine - but we are looking to use it online, so are attempting to build it here. However, I can’t understand how to randomise the number of, colour, and locations of the circles. I have xlsx files of possible set sizes, locations and colours (including one master document), but I’m stumped for what comes next: I can only present one circle and randomise its colour, but not location?
I’ve tried looking at other questions, but none have helped so far. Thanks in advance for any advice.