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Thread: Feedback and fixed presentation time (case 6879)

  1. #1
    Join Date
    Feb 2009
    Posts
    12

    Feedback and fixed presentation time (case 6879)

    Hello,
    I want to design a task that will:
    1. Present two pictures at the same time for 6000ms (not more, not less).
    2. Require a response (choosing one of the pictures, e.g. right or left arrow).
    3. Once RT has been taken - show a feedback of that choice ("feedback" as stim, or jump command to a different trial).

    The best I managed to do is showing the feedback only AFTER those 6000ms have passed. Using the "full" command waits for this time to pass and only then continues. If I won't use "full" - It'll pass to the next trial without waiting for 6000ms. I also use "clear6000" so that the screen will clear but the program will still wait for a response.

    I've attached the CSV file.
    (the bottom trials can be used as "jump" feedbacks, I did not use them in this CSV but I don't mind doing so if it solves the problem).

    Any ideas on how to combine these 3 elements?
    Thanks!
    Attached Files Attached Files

  2. #2
    Join Date
    Feb 2013
    Posts
    1,088
    Shimrit,

    I have some specific questions about the input file you are trying to create:

    1) Do you want participants to choose one of the two pictures displayed for 6000ms either any time during the 6000ms display or only after the 6000ms display time has elapsed?

    2) Exactly what kind of feedback did you want displayed (e.g., the key the participant pressed, some picture or message that you created)?

    3) Did you want the feedback displayed on the same screen as the pictures from which participants made a choice or did you want the feedback displayed on its own screen?
    Last edited by jason_reed; 06-24-2013 at 01:11 PM.
    Jason Reed
    Empirisoft Software Support Specialist

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