Reply To: Exit button

[Jeremy]

Hi,

It does not look to me like you want to implement the same kind of “exit” button: what Diane and Nickolas wanted was a button that was visible on every single trial of the experiment, which would let participants end the experiment prematurely whenever they like

Unless I am misunderstanding what you are trying to do, it looks like you simply want to give that option once to your participants, namely on the consent form page. This is a standard case of linear execution, you could do this for example:

newTrial("Consent",
    newHtml("Consent", "consent.html")
        .center()
        .print()
    ,
    newText("I have read this informed consent document and the material contained \
            in it has been explained to me verbally. All my questions have been answered, \
            and I freely and voluntarily choose to participate.")
        .print()
    ,
    newScale("agree", "I want to participate in this study.", 
            "I do not wish to participate in this study.")
        .size("10em","auto")
        .button()
        .print()
        .wait()
        .test.selected("I do not wish to participate in this study.")
        .success(
            clear()
            ,
            SendResults()
            ,
            newButton().wait()
        )
)

Note that the string in test.selected was missing the final period (the strings must correspond exactly) and I added newButton().wait() to prevent the experiment from moving to the next trial anyway after executing SendResults

Jeremy