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how to define correct responses_mouse response


I am using 7 graphic emojis for response choices through mouse click.
When I tried it myself, (1) the mouse cursor is invisible at first, and (2) the log file says "undefined" under the variable of correct_mouse response.
Please let me know what I need to do.

Thank you!


  • Hi Karma,

    Just with the plain mouse_response item, defining a correct response is limited to left vs right button presses (or maybe more if you have more buttons). It seems you want to define correct responses based, on where on the screen participants click. Is that correct? If so, you should check out the mousetrap plugin:

    (1) the mouse cursor is invisible at first,

    What do you mean with "at first"?


  • Yes, I want to define correct responses based on what the participant click.

    Anyway, it's been solved by changing the format to the likert rating response with a image of the seven emojis. So now it works.

    Thank you, Eduard!

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