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<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span lang=IT style='font-size:10.0pt;
font-family:Arial'>Dear E-prime experts,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=IT style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am working on a task in which the participant is presented
with pairs of picture on the screen. I have 10 different pictures and each
picture is associated with a reinforcement value which stays the same
throughout the experiment (e.g. the cup always wins you 900 points and
the cow always looses you 900 points). On each trial, the participant has to
choose one of the two pictures presented (press ‘q’ for left hand
side picture and ‘p’ for right hand side picture) and win has many
points has he can. The reinforcement values are +900 +700 +500 +300 +100 -100
+300 +500 +700 +900. Sometimes the participant is presented with 2 pictures
associated with punishment (pun-pun trials) and has to choose the one
associated with the lowest punishment (i.e. scored as correct); on pun-rew
trials the rew is scored as correct and on rew-rew trials the pictures with
highest reinforcement value is scored as correct. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The task is running fine, but I would like to change across participants
the reinforcement contingency for each picture so that, for example, not every participant
wins 900 point when they choose the cup. At the moment, I have the following
attributes in my listobject:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0
style='border-collapse:collapse;border:none'>
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<td width=95 valign=top style='width:71.0pt;border:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Picture1<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Picture2<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Slidestate<o:p></o:p></span></font></p>
</td>
<td width=102 valign=top style='width:76.8pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CorrectAnswer<o:p></o:p></span></font></p>
</td>
<td width=165 valign=top style='width:123.8pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Correct<o:p></o:p></span></font></p>
</td>
<td width=168 valign=top style='width:126.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Incorrect<o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<td width=95 valign=top style='width:71.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>cup.bmp<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>cow.bmp<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>1<o:p></o:p></span></font></p>
</td>
<td width=102 valign=top style='width:76.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>q<o:p></o:p></span></font></p>
</td>
<td width=165 valign=top style='width:123.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>You have won 900 points<o:p></o:p></span></font></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>You have lost 900 points<o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<td width=95 valign=top style='width:71.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>car.bmp<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>spoon.bmp<o:p></o:p></span></font></p>
</td>
<td width=95 valign=top style='width:71.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>3<o:p></o:p></span></font></p>
</td>
<td width=102 valign=top style='width:76.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>q<o:p></o:p></span></font></p>
</td>
<td width=165 valign=top style='width:123.8pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>You have lost 300 points<o:p></o:p></span></font></p>
</td>
<td width=168 valign=top style='width:126.0pt;border-top:none;border-left:
none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0cm 5.4pt 0cm 5.4pt'>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>You have lost 500 points<o:p></o:p></span></font></p>
</td>
</tr>
</table>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Etc…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Basically, I would like to keep the pairing for my
attributes ‘Correct’ and ‘Incorrect’ the same, but I
want to change across participants the pairing in my ‘Picture 1’
and ‘Picture 2’ attributes. I hope I made myself clear. From the
e-prime manual and discussion with colleagues, it seems that the best way to do
this would be with an ‘array’, but I have not managed to work it
out yet. Any idea on how to achieve this would be greatly appreciated. Many
thanks.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Best wishes,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Stephane <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>------------------------------------------</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Stephane De Brito, PhD student<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceType w:st="on"><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>Institute</span></font></st1:PlaceType><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
of <st1:PlaceName w:st="on">Psychiatry</st1:PlaceName></span></font></st1:place><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>King's College <st1:City w:st="on"><st1:place w:st="on">London</st1:place></st1:City><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Forensic Mental Health Science Department </span></font><o:p></o:p></p>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>Box</span></font></st1:Street><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
P023</span></font></st1:address><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>De Crespigny Park </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Denmark Hill </span></font><o:p></o:p></p>
<p class=MsoNormal><st1:City w:st="on"><st1:place w:st="on"><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>London</span></font></st1:place></st1:City><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>
SE5 8AF</span></font><o:p></o:p></p>
<p class=MsoNormal><st1:country-region w:st="on"><st1:place w:st="on"><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'>United
Kingdom</span></font></st1:place></st1:country-region><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Tel: + 44 (0) 20 7848 0711<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Fax: + 44 (0) 20 7848 0754<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>website: </span></font><font size=2
face="Courier New"><span lang=IT style='font-size:10.0pt;font-family:"Courier New"'><a
href="www.iop.kcl.ac.uk"><span lang=EN-GB>www.iop.kcl.ac.uk</span></a></span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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