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Stimuli presentation time has time limit but unlimited time to respond

Hi, I am running a size estimation task where participants are asked to pick the biggest circle on the screen (there are four). I want to set up an experiment where:

Fixation (500ms) - Stimuli (10,000ms) - Response slide (have a text that says please respond) (unlimited) - Keyboard response

So I want to give my participants unlimited time to respond but limit the viewing time. How do I set it up?

Thanks in advance.

Comments

  • Hi SoSo,

    i appears to trivial to be a question. Maybe i missed something.

    • sketchpad for fixation (500ms)
    • sketchpad for stimulus with your circles (10.000ms)
    • sketchpad with response instruction (0 ms)
    • keyboard response item

    That's the way you set it up.

    Stephan

  • Thank you Stephan,

    Yes, it is a fairly simple design but I seem have trouble setting it up.

    I tried what you suggested but when I respond within [Sketchpad for Stimulus with Circle], it does not go to the next [Sketchpad for Fixation].

    If a participant responds within [Sketchpad for Stimulus for Circles] presentation time (10,000ms = 10sec), then I want Opensesame to skip [Sketchpad with Response] and go straight to the next fixation.

    However, if a participant does not respond within [Sketchpad for Stimulus for Circles] presentation time, then I want Opensesame to go to [Sketchpad with Response] and wait for response for unlimited amount of time.

    I thought about using Coroutine but I am planning to export the experiment and run it online (via JATOS) and Coroutine is not compatible to be ran online.

    What would you recommend next?

    Thank you!

  • Hi SoSo,

    now it's a different question. So it shall be possible to respond during the 10 seconds.

    • sketchpad for fixation (500ms)
    • sketchpad for stimulus with your circles (0ms)
    • keyboard respone item (10.000ms) #so it goes on after 10 sec, if no response was there
    • sketchpad with response instruction (0 ms) #define in the sequence the if part
    • keyboard response item #define in the sequence the if part

    If you click on your sequence, you will find if statements with 'always'. You do not want to present it always, but only if there was no response.

    A Coroutine is not what you are looking for i think.

  • Thank you Stephan,

    I will have that a go!

    Meanwhile, I am also trying to export my experiment on JATOS. It shows "No problems detected" for Compatibility check but when I try to run it on OSWEB, it keeps telling me that there is an error.


    I tried to look at the console but I am not sure where the problem is.


    I have attached my experiment as a zip file and I would really appreciate it if you could give me any advise.


    P.S. In my attempt to solve this issue,

    1) I have updated Opensesame (ver. 1.3.3.0)

    2) I opened a default Opensesame experiment (only has a welcome page) and tried to run it on OSWEB and that didn't work either.


    Thank you in advance,

    So So

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