Millisecond Forums

Hi! Thank you so much again for your previous help! Right now, I'm struggling with another step in my experiment and hope to get your input:

In a first step, I want to randomly select different items using lists and present them one after the other (works nicely now, thank you!).
As a second step, I want to present all of those selected items at the same time. And well, that's where I'm struggeling, as right now other items are presented...

This is the script I have running so far: Text is presented in sequence, with different lists 3 a-items and 3 b-items are selected randomly out of 10 a/b-items,
and they are presented twice each within the block.b_learn.

<item alltexts>
/ 1 = "text1"
/ 2 = "text2"
/ 3 = "text3"
/ 4 = "text4"
/ 5 = "text5"
/ 6 = "text6"
/ 7 = "text7"
/ 8 = "text8"
/ 9 = "text9"
/ 10 = "text10"
/ 11 = "text11"
/ 12 = "text12"
</item>
<text text>
/ items = alltexts
/ position = (50, 10)
/ select = sequence
</text>

<item allpics>
/ 1 = "a01.jpg"
/ 2 = "a02.jpg"
/ 3 = "a03.jpg"
/ 4 = "a04.jpg"
/ 5 = "a05.jpg"
/ 6 = "a06.jpg"
/ 7 = "a07.jpg"
/ 8 = "a08.jpg"
/ 9 = "a09.jpg"
/ 10 = "a10.jpg"
/ 11 = "b01.jpg"
/ 12 = "b02.jpg"
/ 13 = "b03.jpg"
/ 14 = "b04.jpg"
/ 15 = "b05.jpg"
/ 16 = "b06.jpg"
/ 17 = "b07.jpg"
/ 18 = "b08.jpg"
/ 19 = "b09.jpg"
/ 20 = "b10.jpg"
</item>
<text pics>
/ items = allpics
/ position = (50, 50)
/ select = list.selectedItemnumbers.nextvalue
</text>

<list selectedItemnumbers>
</list>
<list aItemnumbers>
/ items = (1-10)
/ selectionRate = always
</list>
<list bItemnumbers>
/ items = (11-20)
/ selectionRate = always
</list>

<trial t_learn>
/ stimulusframes = [1 = text, pics]
/ timeout = 100
</trial>

<block b_learn>
/ onBlockBegin = [
var i = 0;
while (i < 3) {list.selectedItemnumbers.appendItem(list.aItemnumbers.nextValue); i += 1; };
i = 0;
while (i < 3) {list.selectedItemnumbers.appendItem(list.bItemnumbers.nextValue); i += 1;};]
/ trials = [1-12 = t_learn]
/ branch = [block.b_recog]
</block>
(There are different kinds of learning blocks, so I would branch to the relevant recognition block.)


Now I want to show all previously selected and presented items at the same time. And I want to present all of them in the same order over multiple trials.
So I figured, that I have to generate multiple text-elements to present them all (and not just the same one multiple times).
From other forum posts and the test database, I learned, that as the previous lists list.aItemnumbers and list.bItemnumbers select at random,
I have to create a new list, list.sequenceItemnumbers.
At the beginning of the recognition block b_recog, the new list draws from those two a/bItemnumbers to receive the different a/b-Items.
(I tried drawing from the overall selectedItemnumbers, as I thought that all used items would also be stored there and that would facilitate the selection,
but then the same item was presented multiple times.)

<text pic01>
/ items = allpics
/ select = list.sequenceItemnumbers.1
</text>
<text pic02>
/ items = allpics
/ select = list.sequenceItemnumbers.2
</text>
<text pic03>
/ items = allpics
/ select = list.sequenceItemnumbers.3
</text>
<text pic04>
/ items = allpics
/ select = list.sequenceItemnumbers.4
</text>
<text pic05>
/ items = allpics
/ select = list.sequenceItemnumbers.5
</text>
<text pic06>
/ items = allpics
/ select = list.sequenceItemnumbers.6
</text>

<list sequenceItemnumbers>
/ selectionmode = sequence
</list>

Additionally, I define the position of each pic at the beginning of the block through horizontal/vertical positions,
as each image should be presented at the same spot throughout trials.
(I don't do that in the new text-elements, as I draw from the list.a/bItemnumbers not the overall list.selectedItemnumbers.
And then the a/b items would always be with the same order and position.)
And this nicely puts the items throughout the trials at the same spot.

<counter hpositions>
/ items = (25, 35, 45, 55, 65, 75)
/ select = noreplacenorepeat
/ selectionrate = always
</counter>
<counter vpositions>
/ items = (38, 38, 38, 38, 38, 38)
/ select = current(hpositions)
/ selectionrate = always
</counter>

<trial t_recog>
/ inputdevice = mouse
/ stimulusframes = [1 = text, pic01, pic02, pic03, pic04, pic05, pic06]
/ validresponse = ("pic01", "pic02", "pic03", "pic04", "pic05", "pic06")
</trial>

<block b_recog>
/ onblockbegin = [
list.sequenceItemnumbers.appenditem(list.aItemnumbers.nextvalue);
list.sequenceItemnumbers.appenditem(list.aItemnumbers.nextvalue);
list.sequenceItemnumbers.appenditem(list.aItemnumbers.nextvalue);
list.sequenceItemnumbers.appenditem(list.bItemnumbers.nextvalue);
list.sequenceItemnumbers.appenditem(list.bItemnumbers.nextvalue);
list.sequenceItemnumbers.appenditem(list.bItemnumbers.nextvalue);
text.pic01.hposition = counter.hpositions.selectedvalue;
text.pic01.vposition = counter.vpositions.selectedvalue;
text.pic02.hposition = counter.hpositions.selectedvalue;
text.pic02.vposition = counter.vpositions.selectedvalue;
text.pic03.hposition = counter.hpositions.selectedvalue;
text.pic03.vposition = counter.vpositions.selectedvalue;
text.pic04.hposition = counter.hpositions.selectedvalue;
text.pic04.vposition = counter.vpositions.selectedvalue;
text.pic05.hposition = counter.hpositions.selectedvalue;
text.pic05.vposition = counter.vpositions.selectedvalue;
text.pic06.hposition = counter.hpositions.selectedvalue;
text.pic06.vposition = counter.vpositions.selectedvalue; ]
/ trials = [1-12 = t_recog]
</block>

<expt exp>
/ blocks = [1 = b_learn]
</expt>

But now what does not work: During b_learn and b_recog different items are presented. So the list.sequenceItemnumbers does not use the same items as the list.a/bItemnumbers.
I thought that a list might be resetted after a block, but writing everything in the same block didn't solve it.
And then I tried around with different list settings and onblockbegin comands, but didn't get closer.

Right now I'm a bit lost of where else to check or to read up on.
I guess, someone must have asked and posted something similar, as it seems like a typical problem in recognition tasks,
but I've only found posts regarding (randomized) fixed sequences of items, but when all items are used and have not been selected randomly before.

I would really appreciate your input!