Reply To: Choosing subet of items to present

PennController for IBEX Forums Support Choosing subet of items to present Reply To: Choosing subet of items to present


Hi Jeremy,

Jumping in here because this is pretty similar to something I am trying to accomplish.

I have an experiment with 12 blocks but the stimuli for each block are randomly generated from a master list (csv) for each participant. Essentially, one block consists of displaying 12 random “train” words and 12 random “test” words from this master list. Right now I have a file with three columns (Item, Type, Word) where item is just an index, type is Train v. Test, and Word is the actual stimulus.

I need to generate 24 random subsets of my master list- so 12 of the “Train” words, and 12 “Test” words- without replacement (the main issue) so I guarantee that each item is only seen once, and cycle through them to display the words.

I appreciate your help and any thoughts you have!