<div dir="ltr">Hi Nicholas Michalak,<div><br></div><div>I had the same problem when I was trying to create the experiment in PsychoPy. I couldn't actually completely figure out how to do this, but I tried something different. I know that this is not what you are intending to do, and you probably thought of this already but what I did was to assign locations to pairings before the experiment. For half of the pairs the original was on the left, and the inv was on the right, for the other half I did the reverse. I entered the locations in the excel file that I feed to the PsychoPy. Since PsychoPy was selecting trials in a random order without replacement, the participants did not see one type of stimulus in the same location for all the trials. </div><div><br></div><div>Again, I know that this is not exactly what you intended to do, but this is the closest that I could come up with in a short time. If you could find a better solution I would love to hear that too! I couldn't find a way to do this in PsychoPy's google groups as well.</div><div><br></div><div>It would look like this if you had four pairs in the method that I just mentioned.</div><div><br></div><div>
<table border="0" cellpadding="0" cellspacing="0" width="373" style="border-collapse:collapse;width:279pt">
<colgroup><col width="91" style="width:68pt">
<col width="108" style="width:81pt">
<col width="87" span="2" style="width:65pt">
</colgroup><tbody><tr height="21" style="height:16pt">
<td height="21" class="" width="91" style="height:16pt;width:68pt">oriimage</td>
<td class="" width="108" style="width:81pt">invimage</td>
<td class="" width="87" style="width:65pt">locationori</td>
<td class="" width="87" style="width:65pt">locationinv</td>
</tr>
<tr height="21" style="height:16pt">
<td height="21" style="height:16pt">image1.jpg</td>
<td>image1_inv.jpg</td>
<td>[-0.5,0]</td>
<td>[0.5,0]</td>
</tr>
<tr height="21" style="height:16pt">
<td height="21" style="height:16pt">image2.jpg</td>
<td>image2_inv.jpg</td>
<td>[-0.5,0]</td>
<td>[0.5,0]</td>
</tr>
<tr height="21" style="height:16pt">
<td height="21" style="height:16pt">image3.jpg</td>
<td>image3_inv.jpg</td>
<td>[0.5,0]</td>
<td>[-0.5,0]</td>
</tr>
<tr height="21" style="height:16pt">
<td height="21" style="height:16pt">image4.jpg</td>
<td>image4_inv.jpg</td>
<td>[0.5,0]</td>
<td>[-0.5,0]</td>
</tr>
</tbody></table></div><div><br></div><div><br></div><div>Best</div><div><br></div><div><font face="monospace, monospace"><font color="#000000">Erdem Ozan Meral</font><br style="color:rgb(136,136,136);font-size:12.8000001907349px"></font><div style="font-size:12.8000001907349px;color:rgb(136,136,136)"><font face="monospace, monospace" style="color:rgb(0,0,0)">Boğaziçi University</font></div><div style="font-size:12.8000001907349px;color:rgb(136,136,136)"><font face="monospace, monospace" style="color:rgb(0,0,0)">Department of Psychology</font></div><div style="font-size:12.8000001907349px;color:rgb(136,136,136)"><font face="monospace, monospace" style="color:rgb(0,0,0)">Research & Teaching Assistant</font></div><div style="font-size:12.8000001907349px;color:rgb(136,136,136)"><font color="#0000ee" face="monospace, monospace"><u><a href="http://www.psychology.boun.edu.tr/" target="_blank">www.psychology.boun.edu.tr</a></u></font></div></div><div><br></div><div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 27, 2016 at 1:00 PM, <span dir="ltr"><<a href="mailto:rcicr-users-request@lists.r-forge.r-project.org" target="_blank">rcicr-users-request@lists.r-forge.r-project.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Send Rcicr-users mailing list submissions to<br>
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Today's Topics:<br>
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1. Programming RCP in PsychoPy (Nicholas Michalak)<br>
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Message: 1<br>
Date: Thu, 26 May 2016 13:23:36 -0400<br>
From: Nicholas Michalak <<a href="mailto:nickmm@umich.edu">nickmm@umich.edu</a>><br>
To: "<a href="mailto:rcicr-users@lists.r-forge.r-project.org">rcicr-users@lists.r-forge.r-project.org</a>"<br>
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Subject: [Rcicr-users] Programming RCP in PsychoPy<br>
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<br>
Hi all<br>
<br>
I've successfully programmed an RCP in Medialab, but I'm trying to<br>
translate to PsychoPy in Python.<br>
<br>
Before I ask my question, is there a rcicr thread on programming an RCP<br>
experiment in PsychoPy?<br>
<br>
If not, I'm having trouble presenting the stimuli pairs (i.e., ori and<br>
inv) in such a way that participants see each pair in random order (without<br>
replacement), where the images in a pair are randomly presented on the left<br>
or the right of the screen.<br>
<br>
So if I have 400 pairs and two sides of the screen, I'd want PsychoPy to<br>
draw from the pairs randomly without replacement and draw within the pairs<br>
randomly without replacement: present a random stimuli from a random pair<br>
on the left and place the remaining stimuli from that pair on the right.<br>
<br>
I welcome any solutions--thank you!<br>
<br>
Nick<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><font face="monospace, monospace"><font color="#000000">Erdem Ozan Meral</font><br style="color:rgb(136,136,136);font-size:12.8000001907349px"></font><div style="color:rgb(136,136,136);font-size:12.8000001907349px"><font style="color:rgb(0,0,0)" face="monospace, monospace">Boğaziçi University</font></div><div style="color:rgb(136,136,136);font-size:12.8000001907349px"><font style="color:rgb(0,0,0)" face="monospace, monospace">Department of Psychology</font></div><div style="color:rgb(136,136,136);font-size:12.8000001907349px"><font style="color:rgb(0,0,0)" face="monospace, monospace">Research & Teaching Assistant</font></div><div style="color:rgb(136,136,136);font-size:12.8000001907349px"><font color="#0000ee" face="monospace, monospace"><u><a href="http://www.psychology.boun.edu.tr/" style="color:rgb(17,85,204)" target="_blank">www.psychology.boun.edu.tr</a></u></font></div></div></div></div></div></div>
</div></div></div>