Hi Trevor,
Thanks for the information on yoking, but I still have a question about using a home key. Ideally, subjects would have to press and hold on the spacebar to make the stimuli appear, then release the spacebar to indicate their responses. When they release the spacebar, I would like for the screen to clear to ensure they've made their decision before letting go of the home key, and I would like the key release time to be recorded (as well as total RT for the trial).
Finally, if I'm yoking random pairs, is there a way to make sure that other stimuli in the same trial (the distractors) aren't identical to the yoked pair (that is a combination of random sampling without repacement and yoking within a trial)?
Best regards,
Meredith