Building time reproduction task

Comments

• eduard

  January 7

  Hi Saumya,

  I am not 100% sure, but this sounds like a usecase for the keyrelease functionality:

  https://osdoc.cogsci.nl/4.0/manual/python/keyboard/#get_key_releasearglist-kwdict

  So you would need to 2 keyboard items. In the first one you set it to keypress (to start the measurement), and directly after a keyrelease. (Potentially the first one is unnecessary, try it out!)

  

  Eduard

  
• Saumya

  January 10

  

  I tried similarly building the experiment but my screen is getting stuck at the reproduction phase. Van you please guide me regarding the same?

  Thanks
• eduard

  January 10

  Can you share your experiment? A screenshot is not quite sufficient to spot the problem.

  Eduard

  
• Saumya

  January 17

  REPRODUCTIONPHASE.osexp

  I have attached the experiment for your reference. Thanks a lot for your help.
• eduard

  January 18

  Hi @Saumya,

  I checked your experiment and there are a number of issues:

  1. the name of the space bar is not spacebar but space (see the list available keys button in the keyboard_response item)
  2. Keyrelease is not supported in Psychopy yet. Choose a different backend in the general properties tab (e.g. Expyriment)
  3. Some of your sketchpads have keypresses as durations. This is quite confusing from a user point a view. Consider changing them to time-based durations, or maybe use a mouse response (that is not per se an issue for the keyrelease, it is just hard to know what is going on if you have to press the key 5 times per trial, one of which matters only for the task)

  Hope this helps,

  Eduard

  
• Saumya

  February 16

  Hey!

  Thanks a lot for your suggestions.I have made the necessary changes. I had another query I want my participants to press the spacebar as the cue appears and continue the keypress till they reproduce the duration in the new sketchpad. Can you help me regarding the same as well?
• eduard

  February 16

  If you need keyrelease across sketchpads, you need to use an inline_script to present visual stimuli and a poll the key release function.

  Something like that:

  # define the Canvas objects
  cv1 = Canvas()
  cv2 = Canvas()
  
  # define the Keyboard
  kb = Keyboard()
  
  # draw somethign onto the Canvas
  cv1.text("Canvas1')
  cv2.text("Canvas1')
  
  # define duration of canvasses
  cv1_offset = 1495
  cv2_offset = 2995
  
  # start presentation
  start_time = cv1.show()
  while True:
      # if no response after 2nd canvas, thats a timeout
      if clock.time() - start_time> cv2_offset:
          response = none
           break    
      # time to shwo the second canvas
      if clock.time() - start_time> cv1_offset:
           cv2.show()
     # poll the response and break if there is a key release
     response, time = kb.get_key_release(timeout=5)
     if response:
         break
  

  I haven't tested it, but this should give you the idea.

  Eduard

  
• Saumya

  February 20

  Thanks a lot