|
Group: Administrators
Posts: 12K,
Visits: 98K
|
You can select a random display (i.e. ink) color at the start of the block and then move on from there according to the *word* selected. A minimal example follows below:
<values>
/ displaycolor = 1
</values>
*** randomly select 1 out of 4 display colors at the start of the block ***
<block myblock>
/ screencolor = (black)
/ onblockbegin = [values.displaycolor=noreplace(1,2,3,4);
text.mytext.textcolor=list.displaycolor.nextvalue; ]
/ trials = [1-4=mytrial]
</block>
*** at the end of the trial set display color for the next trial according to the *word* item selected in current trial ***
<trial mytrial>
/ ontrialend = [values.displaycolor=text.mytext.currentindex;
text.mytext.textcolor=list.displaycolor.nextvalue; ]
/ stimulusframes = [1=mytext]
/ validresponse = (57)
/ posttrialpause = 500
</trial>
<list displaycolor>
/ items = (red, green, blue, yellow)
/ selectionmode = values.displaycolor
</list>
<text mytext>
/ items = myitems
/ fontstyle = ("Arial", 10%, true)
/ txbgcolor = (black)
</text>
<item myitems>
/ 1 = "Red"
/ 2 = "Green"
/ 3 = "Blue"
/ 4 = "Yellow"
</item>
|