|
Group: Administrators
Posts: 13K,
Visits: 105K
|
The way items are sampled is determined by the setting of the /select attribute.
<text question>
/ items = question
/ select = noreplace
/ position = (50%, 35%)
/ fontstyle = ("Arial", 18pt, false, false, false, false, 5)
</text>
noreplace means you are sampling items *randomly without replacement*.
If you want items to be presented in a specific order, you should use
/ select = sequence
instead.
To illustrate, consider the difference between
#1:
<block myblock>
/ trials = [1-4 = mytrial]
</block>
<trial mytrial>
/ stimulusframes = [1=mytext]
/ validresponse = (57)
</trial>
<text mytext>
/ items = myitems
/ select = noreplace
</text>
<item myitems>
/ 1 = "A"
/ 2 = "B"
/ 3 = "C"
/ 4 = "D"
</item>
which will display the 4 items in random order, vs.
#2:
<block myblock>
/ trials = [1-4 = mytrial]
</block>
<trial mytrial>
/ stimulusframes = [1=mytext]
/ validresponse = (57)
</trial>
<text mytext>
/ items = myitems
/ select = sequence
</text>
<item myitems>
/ 1 = "A"
/ 2 = "B"
/ 3 = "C"
/ 4 = "D"
</item>
which will present them in the given order A, B, C, and D.
|