Mouse tracking issue

Comments

• Pascal

  November 2016 edited November 2016

  Hi CL,

  sounds like a cool experiment!

  I think I know the source of the problem: when you specify the name of the button that is logged, I assume that you are using the value that is displayed for that button (which is what we usually recommend to do). However, in case that both buttons show exactly the same value, this will lead to problems because mousetrap cannot differentiate between the buttons anymore.

  So, in your special case it might make sense to set name to name=OptionA and name=OptionB and add a little bit of Python code afterwards (using the run phase of an inline_script inserted directly afterwards) to save the values, e.g.:

  if var.response=="OptionA":
      var.responseamount = var.amounta
  else:
      var.responseamount = var.amountb
  

  (assuming that the values you displayed are stored in the variables amounta and amountb)

  Best,

  Pascal

  PS: I will think about whether there is a general solution for that within the mousetrap plugin, so this can be solved differently in the future.
• cletess

  November 2016

  Dear Pascal,

  Many thanks for the quick answer ! I just gave it a go and this solved the issue !!Your explanations made a lot of sense and this is a quick and straigthforward solution !

  Also, based on this issue, I might have another question (if you don't mind) for adaptive feedbacks after each trial.

  The idea is as follow:

  1 - The computer has 2 options: 8 & 10. It will always go for pre-specified values (potentially the higher one).
  2- The participant has 2 options: Option 1 that is the same as the computer (i.e., 10) and option 2 that is a different one (if the computer's choice is 10, the second option will range from 5 to 15). The participant is aware of the computer's choice.
  3- If participant choose the same as the computer, they both receive the selected amount. If participant choose Option 2, he will receive the amount and the computer receives 0.

  I'm struggling to create a feedback after the 'get_response' object that can show both players gain on a trial per trial basis. I'm guessing that for this, I'd have to create an 'If' statement using the new variables you created, right ?

  Best,

  Clément
• Pascal

  November 2016

  Dear Clément,

  glad that it worked!

  Regarding the adaptive feedback: The procedure you proposed sounds good to me and you could indeed extend the code I proposed above, e.g., in this direction:

  if var.response=="OptionA":
      var.responseamount = var.amounta
  else:
      var.responseamount = var.amountb
  
  var.participantpayout = var.responseamount 
  
  if var.responseamount == var.computeramount:
      var.computerpayout = var.computeramount
  else:
      var.computerpayout = 0
  
  

  This would create payout variables in a way you described that you could display on a subsequent feedback item. (Note that the script could be much more parsimonious, but I created an extensive script for clarity.)

  Best,

  Pascal
• cletess

  November 2016

  This is great, Pascal ! Thank you very much !

  After creating a 'computeramount' variable in the trial loop and including the newly created variable in a feedback item, the payout feedback seems to work perfectly fine !

  Your help was greatly appreciated !

  Clément