By francesca92 - 6/8/2016
Hi! I have a question about the randomization of 3 surveypages in a survey. I have 4 parts of a questionnaires (a, b, c, d), each of these parts includes 3 surveypages (a1, a2, a3, b1, b2 ecc). I would like to randomize only the main parts a, b, c, d, not the order of the subgroups a1, a2 ecc. How can i do that? I can't use extp because this survey is a filler between other tasks, already randomized and divided in a superior level. But I understand that survey works with trials/pages not with blocks, right? Thank you so much in advance!
<survey filler>
/ pages = [1=demographics1; 2=demographics2; 3-6= noreplace (a, b, c, d); 7=immigration]
/ timeout = 600000
</survey>
<block a>
/ trials = [1=a1; 2=a2; 3=a3]
</block>
<block b>
/trials = [1=b1; 2=b2; 3=b3]
</block>
same for block c and d
<surveypage a1>
/caption = "Please answer honestly. This person is an ARAB woman. How is she?"
/questions = [1=credible; 2= intelligent; 3= passive; 4=threatening]
/ stimulusframes = [1= arabhijab]
/ontrialbegin = [picture.arabhijab]
/ontrialend = [if (slider.credible > slider.intelligent > slider.passive > slider.threatening)]
</surveypage>
same for a2, a3, b1, b2 b3 c1 c2 c3 d1 d2 d3
<expt 1>
/blocks = [1 = consenso; 2=arab_without; 3= filler; 4= practice_item; 5= a_without]
/subjects = (1 of 4)
/groupassignment = subjectnumber
</expt>
same for expt 2, 3, 4
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By Dave - 6/9/2016
A <survey> is a kind of <block>. You cannot randomize other <block>s within a <block>, which is why
<survey filler>
/ pages = [1=demographics1; 2=demographics2; 3-6= noreplace (a, b, c, d); 7=immigration]
...
</survey>
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By Dave - 6/9/2016
A <survey> is a kind of <block>. You cannot randomize other <block>s within a <block>, which is why
<survey filler>
/ pages = [1=demographics1; 2=demographics2; 3-6= noreplace (a, b, c, d); 7=immigration]
...
</survey>
will not work.
Delete the <block> elements a to do. Then do the following:
Sample only the 1st surveypage of each "component" a to do randomly as in
<survey filler>
/ pages = [1=demographics1; 2=demographics2; 3-6= noreplace (a1, b1, c1, d1); 7=immigration]
...
</survey>
Then use /branch at the <surveypage> level to go from the 1st to the 2nd, from the 2nd to the 3rd, and so on.
<surveypage a1>
...
/ branch = [surveypage.a2]
</surveypage>
<surveypage a2>
...
/ branch = [surveypage.a3]
</surveypage>
...
<surveypage b1>
...
/ branch = [surveypage.b2]
</surveypage>
<surveypage b2>
...
/ branch = [surveypage.b3]
</surveypage>
etc.
The result will be a random order of the components a to d, with the order of pages *within* each component left intact.
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