[solved] OpenSesame: Use lists made in an inline script as 'variabeles'

Comments

• lvanderlinden

  March 2016 edited March 2016

  Hi Merel,

  One solution that comes to mind is to change your dictionary into a list of smaller lists.
  In the smaller lists, the first element is the question, the second one is the correct response, and the third one is the type.

  For example:

  Define the entire list at the beginning of your experiment:

  lEq = [
      ["2 x 2 = ", "4", "multiplication"],
      ["2 + 3 = ", "5", "addition"],
      ["2 - 2 = ", "0", "subtraction"]
      ]
  
  # If you want, you could randomize the list. (This won' affect
  # the content of the smaller lists):
  import random
  random.shuffle(lEq)
  

  Append aninline_script item to the beginning of the trial sequence, and place something like the following in the Prepare tab:

  # Pop one equation from the list. This is without replacement:
  var.equation = lEq.pop()
  
  # We now have one small list, where the first item is the
  # question, the second one the correct response,
  # and the last one the type of equation.
  
  # (We tell OpenSesame what the correct answer is by setting the
  # built-in variable 'correct_response')
  
  var.question, var.correct_response, var._type = var.equation
  

  Now you can use the variables question, correct_response and equation as if they were defined in the block_loop. For example:

  

  The three variables are also logged, so you can keep track of all three of them.

  I hope this helps!

  Cheers,

  Lotje

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• Merel

  March 2016 edited March 2016

  Hi Lotje,

  Thanks for your response! I still have a question:

  In the inline script you made, one equation will be shown to the participant, but how do you loop through the list of equations to show them all, one by one, to the participant?
  Or is that solved by using 'pop'?
• lvanderlinden

  March 2016 edited 7:41AM

  Hi Merel,

  I thought the idea was to show the participant one equation per trial:

  • show equation
  • collect the response
  • log all variables from the current trial

  etc.

  If this is indeed what you want, I think the above method should work. I just forgot to mention that you have to set the number of cycles in the block_loop to the total number of equations.

  I uploaded an example here:
  http://pastebin.com/9Jumk5Cj

  (download and save with the extension .osexp)

  If this is not what you meant, please let me know!

  Cheers,

  Lotje

  Did you like my answer? Feel free to
• Merel

  March 2016 edited 7:41AM

  Also, I get an error that lEq is not defined ..
• Merel

  March 2016 edited 7:41AM

  Thanks! I will look at your example first!
• Merel

  March 2016 edited March 2016

  Hi Lotje,

  Thanks a lot for your help! My experiment is working now! I changed your example a little by using the list of dictionaries directly instead of making it a list of lists.

  # Pop one dictionairy from the list of dictionairies. This is without replacement:
  var.equation = final_equations.pop()
  
  # Connect items dictionary to variables
  var.question = var.equation["equation"] 
  var.correct_response = var.equation["answer"]
  var._type = var.equation["type"]
  

  you're example was very useful, thanks!

  Cheers,

  Merel
• lvanderlinden

  March 2016 edited 7:41AM

  Perfect! I'm glad to hear!

  Did you like my answer? Feel free to