PRESENTING STIMULI BASED ON RESPONSE

Comments

• Daniel

  February 2020

  Hi Ram_92.

  You can use the run_if functionalities for this. See https://osdoc.cogsci.nl/3.2/manual/structure/sequence/ and https://osdoc.cogsci.nl/3.2/manual/prepare-run/#conditional-statements-run-if-and-show-if

  
• Ram_92

  February 2020

  @is there a plugin which lets the user to input a keyboard response. I want to use that keyboard response to set the conditions for the trial sequence.
• eduard

  February 2020

  Hi,

  
  

  Yes, for single keypress, use the the keyboard_response item. The response is stored in the variable var.response which you can then use to set conditions.

  If you have multi-character responses you should use the text input form: https://osdoc.cogsci.nl/3.2/manual/forms/widgets/#text_input-textinput

  Eduard

  
• closedsesame

  February 2020

  Hi Eduard,

  I'm having a similar problem as Ram_92. My experiment entails listening to 9 different voices, and I want to include an option which allows the participant to listen to a specific voice again if they want to, and if not, to continue to the next phase. I've included a keyboard response with allowed responses being numerical keys (1-9), but how do I link those key responses with a sampler item? I have had a look at the links you provided above, but still not quite sure how to implement it.

  Any help would be very much appreciated.
• closedsesame

  February 2020

  Figured it out: needed to have a [correct] column in the sequence with corresponding numerical responses!
• closedsesame

  February 2020

  Actually, that didn't work. If anyone can help, please let me know.
• eduard

  March 2020

  Hi,

  
  

  After the keypress, you will have a variable called response.This  variable can then be used in the sampler by accessing like this: [response]in the field that you need to access. For example, if they keypress is indicating which sound to listen to again, you can feed the response into the filename field of the sampler (if the response and filename don't match up, you have to run a mapping in between, e.g. if response == 1, play sound "a").

  The only thing to keep in mind is that Opensesame runs sequentially, therefore you have to make sure that you response is led back to the sampler, or add a new sampler right after. Going backwards in the experiment is not possible in the obvious way.

  
  

  Does that help? If not, try to specify what you need to accomplish, and/or share your experiment here, then we can try to help you with more detail.

  Good luck,

  Eduard