Permutations for a visual search task

[TParsons]

You can also do this using the Variable and Code components - these will auto-translate to JS so should still work on Pavlovia (let me know if they don’t as that’s something to fix!).

The process is pretty similar to what I described here:

Randomly pair two stimuli together in builder

There is a bit of a trick you can do to randomise two things separately in the same loop - it’s easier to show than tell, so here is an example experiment I just made which does it as simply as possible: indrand.psyexp (11.2 KB) strings.csv (41 Bytes) Essentially, you create a loop with the number of repetitions you want, and make each row of the corresponding csv file a list of all the possible values, separated by a delimiter (here I use a comma). The first thing you’ll need to do is import…

Essentially, rather than having 6 cells, you have one cell with values separated by a delimiter (e.g. a comma), then you split by that delimiter and use numpy.random.choice to choose a value each trial. This lets you simplify complex designs to more simple csv files, but comes at the cost of requiring more programming. As @Oli said, 720 combinations is very doable in excel using the auto-completion tool!