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