Hi,

I'm having problems with randomization when using Direct RT. The procedures of the experiment is as follows:

1. ******** 1000 ms
2. Picture 1000 ms
3. Target word response
4. Blank screen 2000 ms

Total number of trials: 12 pictures x 16 target words = 192 trials
2 breaks, 64 trials in each block, altogether 3 blocks

I can't think of a way of having Direct RT to randomly display each of these 192 trials (where each priming picture matches with each target word). The methods I have used would only randomly select from the pictures and target words. This means there is some repetition in the pairing of the pictures and words, and that some (picture and word pair) trials can't be displayed.

How can I overcome this problem?
Thank you very much for your help!

Emily