randomizing blocks???

SuperLab SuperLab 4 Support
1

Does anyone know how to randomize blocks in SuperLab? I have four groups of stimuli that I need to present to subjects, but I need to randomize the order in which subjects get the groups of stimuli. I figured out how to randomize events within a trial, and how to randomize trials within a block, but I cannot figure out how to randomize the order of the blocks themselves–

Any and all help will be VERY greatly appreciated!!!

2

Randomizing blocks within a group is not possible yet as of SuperLab 4.0.3.

3

This previous thread might be helpful. Basically, you just set up all of the possible block orders as “groups” and assign actual subjects to them sequentially or randomly. You could name the pseudogroups descriptively : 1234 1243 1324 1342 …

Greg Shenaut