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Keyboard_response_item only one response (No correction)

Hey Guys,

in my recent project I am using a Coroutines_item including two sketchpad_items and a keyboard_response_item. Here is the structure:



When collecting responses only the first response should be accepted. That means after pressing the wrong button there should be no possibility to correct the response by pressing the right button afterwards. I tried it a few times and unfortunately it is possible to correct the response. In that case the log-file shows that the response was correct but the response_time is set to zero.

I hope someone has an idea how only the first response is accepted.

Greetings
-Artur

Comments

  • Ok I got the problem!

    When I activate "ignore ongoing keypress" in the keyboard_response_item there is no problem anymore!

  • Hey Kantartur,

    my problem is the other way around. I want participants to be able to correct their response, actually, they should stay on the page until they have made the correct decision (it's an IAT). Do you know how to do it?

    Best,

    Laura

  • HI Laura,


    It isn't quite clear yet what exactly it is that you want to accomplish. If you only want the experiment to proceed if participants press the correct button, you could allow only that single button, right? Do you also need to record all other key presses before the correct response?

    Eduard

    Buy Me A Coffee

  • Hey Eduard,

    thank you for the response. I try to explain it again. In my IAT participants either have to press "X" or "M", depending in which category they want to classify it. SInce I need the reaction time for the correct response, I want them to choose the right category. However, within the 40 Trails that I run, both "X" and "M" can be true, which means I cannot set a single button as a right response.

    Does that make more sense?

    Thanks, Laura

  • Hi Laura,

    Normally, you can add a column to your loop table that codes the correct response for a given trial. Then you can use this variable to set as allowed response for a particular trial. This procedure is explained in the step-by-step tutorial. However, like that you don't know when participants made a response error other than probably somewhat longer response times. So, maybe it makes more sense, to allow for correct and incorrect responses, but later during the analysis exclude trials on which participants made a mistake? Would that work too?

    Eduard

    Buy Me A Coffee

  • Hey Eduard,

    thank you for your response. I'm not quiet sure if I understood you right, therefore, I attached two screenshots. In the first you I allowed both (X and M) as possible reactions.

    In the next one I definded with answer is correct for the given word.

    Since the allowed response contain both letters, the next trail appears after the correct and the incorrect response, which I actually try to avoid. For example, if the word "Papa" appears, participants have to press "x". If they press "m", they remain on this trail until they got it right.

    Deleting wrong responses is not an option, since it has been shown that it confounds the result.

    Does that make sense?

    Thank you, Laura

  • Hi Laura,

    the attached experiment visualizes what I meant. Do you understand what I mean? Is it applicable to your situation?

    Eduard


    Buy Me A Coffee

  • Hi Eduard,

    it works perfectly fine! Thank you so much for your patience :)

    Best,

    Laura

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