Millisecond Forums

<picture m_stim>
/ select = values.itemnumber
/ select = noreplace
/ items = m_pics
/ size = (50%, 50%)
/ position = (50, 50)
</picture>You also need two separate <list> elements -- one for the 'f' stims, one for the 'm' stims. The single existing one makes no sense in the context of the script<list itemlist>
/ resetinterval = 0
/ items = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
...
421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440)
/ selectionmode = random
</list>given that there are no item numbers up to 440.<picture f_stim> has 220 items (item numbers thus ranging from 1 to 220), <picture m_stim> has 220 (again, item numbers ranging from 1 to 220).

ok, the first problem is fixed. But how do I specify two list elements (one for f and another for m)? It's not clear to me how to link the list element with the particular stimulus set, and also the value element with a particular list element.

E.g.<values>
/ itemnumber = 0
</values>

<expt>
/ blocks = [1-4=myblock]
</expt>

<block myblock>
/ trials = [1-2=noreplace(a_trial, b_trial)]
</block>

<trial a_trial>
/ ontrialbegin = [values.itemnumber=list.a_list.nextvalue]
/ stimulusframes = [1=a_stim]
/ validresponse = (57)
</trial>

<trial b_trial>
/ ontrialbegin = [values.itemnumber=list.b_list.nextvalue]
/ stimulusframes = [1=b_stim]
/ validresponse = (57)
</trial>

<text a_stim>
/ items = a_items
/ select = values.itemnumber
</text>

<item a_items>
/ 1 = "A1"
/ 1 = "A2"
/ 1 = "A3"
/ 1 = "A4"
</item>

<list a_list>
/ items = (1,2,3,4)
/ selectionmode = random
/ resetinterval = 0
</list>

<text b_stim>
/ items = b_items
/ select = values.itemnumber
</text>

<item b_items>
/ 1 = "B1"
/ 1 = "B2"
/ 1 = "B3"
/ 1 = "B4"
</item>

<list b_list>
/ items = (1,2,3,4)
/ selectionmode = random
/ resetinterval = 0
</list>