Randomly present all blocks and then in a reverse order

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This would need to be done in code. Insert a code component. In its “begin experiment tab”, put something like:

import copy

# create a list of filenames (use your actual names of course):
blocks = ['con01.xlsx', 'con02.xlsx', 'con03.xlsx', 'con04.xlsx', 'con05.xlsx']

# randomise it:
shuffle(blocks)

# make a copy and reverse it:
blocks_2 = copy.copy(blocks)
blocks2.reverse()

# add it to end of the original list:
blocks.extend(blocks2)

# check that it does what you want:
print(blocks)

Now your blocks loop:

  • no longer needs to be connected to a conditions file (as the list of blocks is held in code now), and
  • you’ll need to specify the nReps to be 10 so you get the correct number of blocks, and
  • it should be “sequential” rather than “random” now (not that it would make much difference here I guess).

Lastly, in your inner trials loop, put this in the “conditions file” field:

$blocks.pop()

This takes the next filename in order from the blocks list.