The main idea is to chose randomly the order of blocks from a set of 4 different block within an experiment. In the end all block should have been presented. Every block contains two trails (one audio file and a set of three items). Again, all audio files and items should be show. So it's really only about the order of the blocks.
I tried to use the noreplace on a block-level. As a result, one of the three items from both blocks are chosen and the others won't show up. Am I wrong to use noreplace in this case?
<expt>/ subjects = (1 of 2)/ blocks = [1-4=noreplace(A1, A2, A3, A4)]</expt><expt>/ subjects = (2 of 2)/ blocks = [1-2=noreplace(B1, B2, B3, B4)]</expt>
Thanks a lot!
Anna