[solved] Problems with correct answer and feedback go/no-go task

Comments

• sebastiaan

  September 2015 edited 11:48PM

  Hi Aurelio,

  the timeout response is not recognized as a correct one; to solve this I added a bit of coding during my trials but looking at the data it says that the variable "correct" is undefined. This is the code that I used.

  When a timeout occurs, response is set to "None", whereas you appear to assume that it's set to "timeout". You can find an example of this here:

  • http://osdoc.cogsci.nl/tutorials/capybara/#step-11-define-the-correct-response

  I noticed that sometimes it takes two keypress to give an answer (so even for the instructions I have to press the spacebar two times), is there some kind of delay? or is it just me?

  There seem to be two things that are a bit odd in your experiment:

  • You have a text_display that has a 'keypress' duration, followed by a keyboard_response. This means that you require two key presses: one to end the text_display, and one to end the keyboard_response. In general, you should either set an item's duration to 'keypress', or have the item followed by a keyboard_response, but not both.
  • You have a sketchpad with a 840 ms duration, followed by a keyboard_response. This means that, after showing the sketchpad, the experiment pauses for 840 ms, before moving on to the keyboard_response to collect a key press. So keyboard input during that 840 ms interval is lost.

  Does that clear things up?

  Cheers,
  Sebastiaan

  
  
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• Socialbear

  September 2015 edited 11:48PM

  Dear Sebastian,

  things worked smoothly after your suggestions and hints. Designing during summer vacations could lead to banal issues, but now it does what I want him to do.

  Thanks a lot for your help and work

  Cheers,

  Aurelio