[open] Collecting responses during a text display

Comments

• Edwin

  October 2012 edited October 2012

  Hi Sarah!

  You're very close! You can set your text_display item's duration to 0. After this, put in an inline_script to which - in the run phase - you add the following:

  from openexp.keyboard import keyboard
  
  # timeout in milliseconds
  maxtime = 3000
  
  # list of allowed keys
  allowedkeys = ['return', 'space', 'k', ';', '9', 'right']
  
  # create keyboard object
  my_keyboard = keyboard(self.experiment, keylist=allowedkeys, timeout=0)
  
  # wait for keyboard response or timeout
  no_timeout = True
  no_response = True
  starttime = self.experiment.time()
  while no_timeout:
      if no_response:
          pressed, presstime = my_keyboard.get_key()
          if pressed:
              self.experiment.set("response", my_keyboard.to_chr(pressed))
              self.experiment.set("response_time", presstime - starttime)
              no_response = False
      if self.experiment.time() - starttime >= maxtime:
          if no_response:
              self.experiment.set("response", 'timeout')
              self.experiment.set("response_time", None)
          no_timeout = False
  

  The allowed keys are now set fairly random (the return, 'k', ';' and '9' buttons, as well as the space bar and the right arrow button), but you can edit that any way you want.

  Hope this helps! (if not, please just give us a holler)

  N.B.: this inline_script will replace the function of a keyboard_response, so you do not have to add a keyboard_response anymore (but do use a logger!).
• slincoln

  October 2012 edited 10:55PM

  Thanks Edwin, I'll give it a try. This is my first go at programming anything.
• slincoln

  October 2012 edited October 2012

  Hi Edwin,

  When I insert the script, I get the following error:

  Error: Script error
  Description: Error parsing variable definition: 'set font_family "mono" from openexp.keyboard import keyboard # timeout in milliseconds maxtime = 3000 # list of allowed keys allowedkeys = ['return', 'space', 'k', ';', '9', 'right'] # create keyboard object my_keyboard = keyboard(self.experiment, keylist=allowedkeys, timeout=0) # wait for keyboard response or timeout no_timeout = True no_response = True starttime = self.experiment.time() while no_timeout: if no_response: pressed, presstime = my_keyboard.get_key() if pressed: self.experiment.set("response", my_keyboard.to_chr(pressed)) self.experiment.set("response_time", presstime - starttime) no_response = False if self.experiment.time() - starttime >= maxtime: if no_response: self.experiment.set("response", 'timeout') self.experiment.set("response_time", None) no_timeout = False '
  

  I'm unclear what this means. (Again, I'm not a script person!)
  Thank you for any help!
• sebastiaan

  October 2012 edited October 2012

  It seems that you have pasted the script into the OpenSesame script that defines an item, rather than a Python inline_script item (for an explanation of the difference, see here).

  Is that correct? If so, could you try it again, but this time add a new inline_script item to the experiment, and paste the code into the editor of this item?

  Cheers!

  
  
  Check out SigmundAI.eu for our OpenSesame AI assistant!
  
• slincoln

  October 2012 edited 10:55PM

  Thank you Sebastian!