Likert data format

[agarza7]

I am working with the Likert plugin on the Cognition platform, but I need the responses to be saved in separate variables, not an array. Can someone help me please. Sorry for my question, but I am starting to learn js.

[becky-gilbert]

Hi @agarza7, this is something that some people find easier to do in the data processing stage, using a scripting language like R, Python, Matlab, etc.

But if you want to do this in your jsPsych JavaScript code, you could do this in the trial's on_finish function. The on_finish function gives you access to the trial data, and allows you to modify it. So if your survey-likert trials always have just one question on the page, then you could create a new variable (e.g. "response_value") in the trial data, and store the response inside of that. You can access the response with data.response, followed by the question name:

  var trial = {
    type: 'survey-likert',
    questions: [
      {prompt: "I like vegetables.", name: 'Vegetables', labels: scale, required: true}
    ],
    on_finish: function(data) {
      data.response_value = data.response.Vegetables;
    }
  }

If your trials have more than one question on the same page, then you will need to create different variables to hold each of the different responses, like this:

  var trial = {
    type: 'survey-likert',
    questions: [
      {prompt: "I like vegetables.", name: 'Vegetables', labels: scale, required: true}, 
      {prompt: "I like fruit.", name: 'Fruit', labels: scale, required: true}
    ],
    on_finish: function(data) {
      data.response_veg = data.response.Vegetables;
      data.response_fruit = data.response.Fruit;
    }
  }

Does this solution work for you?

[agarza7]

That worked great, thank you very much.