Reply To: Pseudo-randomising stimulus presentation

PennController for IBEX Forums Support Pseudo-randomising stimulus presentation Reply To: Pseudo-randomising stimulus presentation


Great, thank you so much for this! That’s very helpful, I’ll upload that to my script folder. I’ve now had a look at Nora’s question at well in the original Ibex platform.

Thanks also for flagging up this potential problem. In theory it shouldn’t be an issue as I have equal numbers of stimuli distributed across all group/condition combinations (i.e., 12 1As, 12 1Bs, etc.), but could it possibly happen that the function accidentally doesn’t use a particularly category at the beginning of the Block/trial set, and is therefore ‘forced’ to use them at the end and crash itself? While I’ll of course test the experiment many times before publishing it, this seems like the kind of issue/error which might only be exposed at random, or across a very large number of iterations.

Thank you so much!