I'm not sure why this isn't working: I want to be able to have subjects type 4 letters and have each displayd at a specific location on the screen until all responses have been collected.

As an example of what I'm trying to do I've pasted the end of a row(trial) below, it may or may not be clear when this posts but in the loc column I specify X,Y,0 so as to leave the previous stim on the screen BUT this doesn't work for "feedback" ~ all the other stim stay on the screen but the feedback is cleared as soon as the next feedback is placed on the screen. I don't want to use an open ended response field if I can avoid it because the positions of the items on screen matters to the experiment.

stim ------- loc --- time - stim - loc ---- time ----- stim ----- loc -- time
feedback -- x,y,0 - 0 ---- ~ --- 0,0,0 -- rt:any --- feedback - x,y,0 - 2000

Thanks,
Nate