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form_text_input/form_multiple_choice: Using space to continue


In my opensesame experiment, I want to implement some demographic questions in the end. I am currently using the form_text_input-item to ask about the participants' age and the form_multiple_choice to ask about their gender.

In the parts of the experiment that precede the questionnaire, the participants had to press the Space-bar in order to continue for example from a sketchpad to the next. I would now like to remain using the Space-bar for the questionnaire, so that the whole procedure is as easy as possible for the participants. Is it possible to change that the participants do not have to use a mouse-click response (like for the form_multiple_choice) or press enter (as for the form_text_input) but instead the Space-bar?


  • Hi @SQuestion,

    I think that because the form_text_input object is designed to accept text, the space bar response is regarded as part of the text inputted by the participant. There may be a way to use code to monitor the content of the text to intercept a space bar response, and to do something similar with the form_multipe_choice object, but I'm not sure how to go about doing that and I suspect it might be tricky and perhaps not worth the trouble.

    However, an alternative would be to display your questions on a sketchpad and use a modified version of the code posted by Sebastiaan here to track the text inputted, display it on the screen, and take the space response as the response that moves to the next object in your experiment. I adapted the code slightly to take the space bar as the response to move on to the next object. You can download below and adapt it to your needs (for example, you might want to implement a check to make sure that the experiment does not move on if the participant didn't type anything, or even to check that it is a numerical value in the case of the age question; you'd have to research Python language a little to work out how to do that):

    Of course, a simpler solution would be to just make clear on your screen what participants must press to move on to the next screen. Sure, the coherence across the experiment would not be perfect, but that would spare you some coding.

    As for the sex question, you could simply use a sketchpad + keyboard input object with instruction to press M for male and F for female, rather than using a multiple choice form. Then it would be very simple to take the response, and define the space bar as the key to press to move on. Seems a lot simpler to me.

    Hope this helps,


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  • Hi @Fab,

    Thanks a lot already! I realised that I can only open .opensesame files but not the .osexp files, but have no idea why or how to change that.. Do you maybe know what I can do?

    Kind regards!

  • Hi @SQuestion,

    I think you're using an outdated version of Open Sesame. What version are you using?

    Since version 3.0, experiments are saved in .osexp instead of .opensesame (see

    I recommend you download the latest version. Version 3.3.10 just came out:

    In principle you should be able to open your old .opensesame file and read .osexp files.

    Kind regards,


    If you found my reply helpful and wish to invite me to a coffee, you can do so here ๐Ÿ˜‰ Buy Me A Coffee

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