Millisecond Forums

Hmm, I think this may be a side effect of using the abort() function under certain circumstances. Okay, different approach without using abort(). Use /stop and /skip attributes in your <block>s to prevent them from running in case the participant responds "No" on the consent question. I.e.

<expt>
/ blocks = [1=screen1; 2=taskblock]
</expt>

<block screen1>
/ stop = [radiobuttons.consent.response=="No"]
/ trials = [1=screenoutpage; 2=checktrial]
</block>

<block taskblock>
/ skip = [radiobuttons.consent.response=="No"]
/ trials = [1=tasktrial]
</block>

<surveypage screenoutpage>
/ ontrialend = [if(radiobuttons.consent.response=="No") {defaults.finishpage=text.screenouturl.item.1;}]
/ questions = [1=consent]
/ showpagenumbers = false
/ showquestionnumbers = false
/ finishlabel = "Next"
</surveypage>

<text screenouturl>
/ items = ("http://www.myopinions.com.au/Surveys/RewardSurvey.aspx?codes=spsqiogaap&id=<%script.subjectid%>")
</text>

<radiobuttons consent>
/caption = "I have read and understood the information sheet and agree to participate in the study"
/ options = ("No","Yes")
/required = true
/orientation = vertical
</radiobuttons>

<trial checktrial>
/ stimulusframes = [1=checktext]
/ validresponse = (57)
</trial>

<trial tasktrial>
/ stimulusframes = [1=tasktext]
/ validresponse = (57)
</trial>

<text checktext>
/ items = ("The consent response was <%radiobuttons.consent.response%>. If you selected 'No' on the previous page, you should not be seeing this.")
</text>

<text tasktext>
/ items = ("This is the actual task.")
</text>

You can test the above code directly here: http://research.millisecond.com/david.nitz/experiment.web?id=12345

Unfortunately still no luck with this :(

The test worked fine, both online and my stand alone version. However, when I launched the new script onto the website (removing all the check text etc) the survey continues even when the respondent selects "no". Any other suggestions or did I mess up editing the syntax for the web? (see below)

Here is the experiment specified below (note the participants see a picture of the consent form first, then are asked 2 screen out question 1) consent (as discussed) and 2) over 18 (which I will cut, paste and edit the consent screen out syntax for), then they go onto the survey.

<expt>
/ blocks = [1=consentpic; 2=screen1; 3=screen2; 4= Survey; 5=block1; 6=block2; 7=block3; 8=block4; 9=block5; 10=block6; 11=block7; 12=block8; 13=block9; 14=block10; 15=block11; 16=block12; 17=block13; 18=block14; 19=block15; 20=block16; 21=block17]
</expt>

And here is the screen out syntax I used for the consent screen out.

<block screen1>
/ stop = [radiobuttons.consent.response=="No"]
/ trials = [1=screenoutpage]
</block>

<surveypage screenoutpage>
/ ontrialend = [if(radiobuttons.consent.response=="No") {defaults.finishpage=text.screenouturl.item.1;}]
/ questions = [1=consent]
/ showpagenumbers = false
/ showquestionnumbers = false
/ finishlabel = "Next"
</surveypage>

<text screenouturl>
/ items = ("http://www.myopinions.com.au/Surveys/RewardSurvey.aspx?codes=spsqiogaap&id=<%script.subjectid%>")
</text>

<radiobuttons consent>
/caption = "I have read and understood the information sheet and agree to participate in the study"
/ options = ("No","Yes")
/required = true
/orientation = vertical
</radiobuttons>

Thanks again for all your help...and your patience!

Bel.

I can't tell you where the mistake/s is/are based on that snippet. It is too incomplete.

If I were to hazard a guess, I'd say that you missed including or misspecified the /skip attributes in all the subsequent blocks:

<block screen1>
/ stop = [radiobuttons.consent.response=="No"]
/ trials = [1=screenoutpage; 2=checktrial]
</block>

<block taskblock>
/ skip = [radiobuttons.consent.response=="No"]
/ trials = [1=tasktrial]
</block>

Every <block> or <survey> in your script that follows <block screen1> needs to have that specified in order to *not* be run in case of a participant declining to give consent.

Thanks!!

You were right, I had not included the skip function to all other blocks.

It's all up and running now. Thanks again for your help and patience.

Belinda.