Two images presented at same time

[Achandler]

I am very new to directrt and I am setting up a force choice exp. that I need to display two pics at the same time and have the part. to press a key corresponding to the specific picture that they were asked about in the previous trial. How do I go about doing this? I have tried a couple different methods based on the sample help stuff, but nothing is making it look like I need it to. Please help, ASAP.

[jarvis24]

which part in particular are you having trouble with? should be able to do this with a compound screen (see corresponding sample)--i.e., showing two stimuli back to back while using a clear value of 0 on the second one (e.g., .25,.25,0) so that the first image stays on the screen with the second.