How to pick a specific stimulus and then randomize

Dave - 1/31/2020

+x

uni-student92084 - 1/31/2020
For my study, I am testing whether people have a preference for the Republican or the Democratic party. I am running political honestly scores across the screen, for both parties. My plan is to have the first score that appears on the screen to either be a good Democratic or Republican scores and then all the scores afterward will be randomized. So every score that will appear on the screen first will either be a good Republican or good Democratic score.

For my current script, I have figured out how to randomize scores using lists, but is there a way where I can pick whether a good Republican/Democratic score will run first and then have the rest of the scores run at random?

Any advice would be greatly appreciated!

LEGEND:
Dem/Rep plus= good political honesty scores
Dem/Rep minus = bad political honesty scores

Dem B= Demorcartic scores are better
Rep B = Republican scores are better

<item Demplus>
/1 = "score1+"
/2 = "score2+"
/3 = "score3+"
</item>

<item Demminus>
/1 = "score1-"
/2 = "score2-"
/3 = "score3-"
</item>

<item Repplus>
/1 = "score1+"
/2 = "score2+"
/3 = "score3+"
</item>

<item Repminus>
/1 = "score1-"
/2 = "score2-"
/3 = "score3-"
</item>

<text Demplus1>
/items = Demplus
/txcolor = (blue)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demplusitems.nextindex
</text>

<text Demplus2>
/items = Demplus
/txcolor = (blue)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demplusitems.nextindex
</text>

<text Demplus3>
/items = Demplus
/txcolor = (blue)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demplusitems.nextindex
</text>

<list Demplusitems>
/ poolsize = 3
/ selectionrate = always
/ replace =true
</list>

<text Demminus1>
/items = Demminus
/txcolor = (blue)
/txbgcolor = (white)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demminusitems.nextindex
</text>

<text Demminus2>
/items = Demminus
/txcolor = (blue)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demminusitems.nextindex
</text>

<text Demminus3>
/items = Demminus
/txcolor = (blue)
/txbgcolor = (white)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Demminusitems.nextindex
</text>

<list Demminusitems>
/ poolsize = 3
/ selectionrate = always
/ replace =true
</list>

<text Repplus1>
/items = Repplus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Repplusitems.nextindex
</text>

<text Repplus2>
/items = Repplus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Repplusitems.nextindex
</text>

<text Repplus3>
/items = Repplus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/ select = list.Repplusitems.nextindex
</text>

<list Repplusitems>
/ poolsize = 3
/ selectionrate = always
/ replace =true
</list>

<text Repminus1>
/items = Repminus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/select = list.Repminusitems.nextindex
</text>

<text Repminus2>
/items = Repminus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/select = list.Repminusitems.nextindex
</text>

<text Repminus3>
/items = Repminus
/txcolor = (red)
/animation = path (5000, 1, 0%, 90%, 100%, 90%)
/select = list.Repminusitems.nextindex
</text>

<list Repminusitems>
/ poolsize = 3
/ selectionrate = always
/ replace = true
</list>

<list DemB>
/items = (text.Demplus1, text.Demplus2, text.Demplus3, text.Repminus1, text.Repminus2, text.Repminus3)
/selectionrate =always
/selectionmode =random
/replace = false
</list>

<list RepB>
/items= ( text.Demminus1,text.Demminus2,text.Demminus3, text.Repplus1,text.Repplus2, text.Repplus3)
/selectionrate =always
/selectionmode =random
/replace = false
</list>

<trial PolicyA>
/ontrialbegin = [
trial.example.insertstimulustime(list.DemB.nextvalue, 0);
trial.example.insertstimulustime(list.RepB.nextvalue, 1000);
trial.example.insertstimulustime(list.DemB.nextvalue, 2000);
trial.example.insertstimulustime(list.RepB.nextvalue, 3000);
trial.example.insertstimulustime(list.DemB.nextvalue, 4000);
trial.example.insertstimulustime(list.RepB.nextvalue, 5000);
trial.example.insertstimulustime(list.DemB.nextvalue, 6000);
trial.example.insertstimulustime(list.RepB.nextvalue, 7000);
trial.example.insertstimulustime(list.DemB.nextvalue, 8000);
trial.example.insertstimulustime(list.RepB.nextvalue, 9000);
trial.example.insertstimulustime(list.DemB.nextvalue, 10000);
trial.example.insertstimulustime(list.RepB.nextvalue, 11000);
trial.example.insertstimulustime(list.DemB.nextvalue, 12000);]
/ validresponse = (57)
/ posttrialpause = 500
/ontrialend= [trial.PolicyA.resetstimulusframes(7000)]
</trial>

Create two <text> elements -- DemPlusfirst and RepPlusFirst --, put them in a <list>, sample the first stimulus from that <list>.

Sample the remaining stimuli randomly from another <list>.