randomly order items BETWEEN participants

[Paula Teich]

Hi everyone,

I would like to randomly order items BETWEEN participants.

Our participants will see 10 stimuli and for each stimulus complete the same 6 items.
Within the same participant, the order of these 6 items should always stay the same (so below each stimulus, the items are always in the same order for the same participant). But between participants, the item order should be randomized.

One way to do this is to create one seperate survey for each specific item order and then add a shuffle in the run that randomly assigns participants to different surveys (item orders). However, we have 6 items whose order has to be randomized, so we would have to create too many different spreadsheets.

6! = 6*5*4*3*2*1 = 720

Is there a way to randomly order items BETWEEN participants that doesn’t involve manually creating a spreadsheet for each item order?

Thanks very much in advance!

Best,
Paula

[Savannah Lewis]

Hello formr friends, 

I am in a similar situation where we have 7 different components that need to be randomized but participants will complete them all. So I am just curious if you (Paula) ever figured this out or if anyone else has thought of a way to do this with formr?

Thanks in advance! 

Savannah 

[Ruben Arslan]

Dear Savannah and Paula,

this sounds like you could do it with block randomization? I.e. assign the items in one block the same letter (in the block_order column), and then have six/seven consecutive blocks. The items within each block will stay in that order, but the blocks will swap positions.

Did I understand the problem correctly?

Best,

Ruben

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