Hi,

I've been experimenting with the abort, branching, and abort experiment features, but I still don't really understand how I'm supposed to program what I want.  I have two basic things I'm trying to do:

1) If a participant selects "I disagree" (meaning they do not wish to participate in this experiment) on the Informed Consent, the entire experiment should close out.  The informed consent is in a <trial>.

2) If a participant wants to exit the entire experiment at any time, they should be able to do so.  (Can participants use CTRL+Q to exit also?)

Thank you!

Ashley

You use the script.abort() function as detailed in the documentation and the example given therein:

<trial consent>
/ ontrialend= [if (
trial.consent.response == 57 ) script.abort();]

[...]

</trial>

The above means: If the spacebar is pressed, the script is aborted. You have to adapt that to the available responses in your consent trial.

Thank you!  

Is there a way for me to make the following occur:

If the participant clicks "I agree", it takes them through the experiment as normal.

If the participant clicks "I disagree", it takes them to a separate page, which says something like, "You have decided to not participate in the experiment.  Possible alternatives for earning credits include [blah blah blah].  Please press the space bar to exit."  Then they can click the space bar, which takes them out of the experiment.

I would really appreciate some guidance on how to make that happen.

Thanks,

Ashley

In case of a 'disagree' response, /branch to a <trial> displaying the message you mentioned. Use the script.abort() function as already detailed previously in that message <trial> to abort the script.

Hi,

I'm not programming it properly, but I can't figure out what I'm doing wrong.  Here's what I have:

<trial InformedConsentP3>

/ stimulusframes = [1=InformedConsent3; 2=Agree; 3=Disagree; 4=AgreetoPar; 5=DisagreetoPar; 6=FormDate]

/ inputdevice = mouse

/ validresponse = (Agree, Disagree)

/ branch = [if (trial.informedconsentp3.response==Disagree) trial.noconsentexit]

</trial>

<trial noconsentexit>

/ stimulusframes = [1=noconsentexit]

/ ontrialend= [if ( trial.consent.response == 57 ) script.abort();]

</trial>

What should I be putting?  Thank you so much for your help!  I really appreciate this.

Ashley

<trial InformedConsentP3>

/ stimulusframes = [1=InformedConsent3; 2=Agree; 3=Disagree; 4=AgreetoPar; 5=DisagreetoPar; 6=FormDate]

/ inputdevice = mouse

/ validresponse = (Agree, Disagree)

/ branch = [if (trial.informedconsentp3.response=="Disagree") trial.noconsentexit]

</trial>

<trial noconsentexit>

/ inputdevice = keyboard

/ stimulusframes = [1=noconsentexit]

/ validresponse = (57)

/ ontrialend= [if ( trial.noconsentexit.response == 57 ) script.abort();]

</trial>