<div dir="ltr">Hi, David, that worked well. Thanks for the help!<br><br>On Monday, August 26, 2013 5:22:38 PM UTC-3, McFarlane, David wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">First, another general point about online disussions -- when you post
<br>a reply, *please* also include the previous messages from *both*
<br>parties, so that your correspondent can readily recall the proper
<br>context (look at my reply as an example). Just a little courtesy to
<br>spare your correspondent and other readers some work.
<br>
<br>So, the "criterion based exit" example shows you how to create a
<br>simple loop, now you just need to modify the stimulus each time
<br>through the loop. You could do that just by using an attribute
<br>reference in your stimulus (e.g., "[FragFile].bmp", and then using
<br>c.SetAttrib to set the attribute each time through the loop (see the
<br>Context.SetAttrib in the E-Basic Help facility) according to whatever
<br>algorithm you devise. You should be able to take it from there.
<br>
<br>-----
<br>David McFarlane
<br>E-Prime training
<br>online: <a href="http://psychology.msu.edu/Workshops_Courses/eprime.aspx" target="_blank">http://psychology.msu.edu/<wbr>Workshops_Courses/eprime.aspx</a>
<br>Twitter: @EPrimeMaster (<a href="https://twitter.com/EPrimeMaster" target="_blank">https://twitter.com/<wbr>EPrimeMaster</a>)
<br>
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<br>
<br>At 8/16/2013 07:25 PM Friday, Alexandre Nobre wrote:
<br>>Hi, David, thank you for the reply. I'm sorry for not being clear
<br>>about what I meant. I do have the fragmented pictures, actually. My
<br>>main problem is how to repeat the response slide in a single trial
<br>>until the participant identifies the picture correctly (which he
<br>>does verbally - the key press for repeating the same picture, but in
<br>>a less fragmented form, or for jumping to the next picture (trial)
<br>>is done by the experimenter). I need to have the slide change the
<br>>image it uses every time the participant emits a wrong response,
<br>>until they get it right or the last fragmented form has been displayed.
<br>>
<br>>I've been able to insert several slides and masks in the trial
<br>>procedure, so that, if the participant emits a wrong response, the
<br>>trial continues on to the next slide, which presents the same
<br>>picture in a less fragmented form. If they identify the picture
<br>>correctly, then he trial ends using a label. The problem with this
<br>>is that, because this task is done simultaneously with a dichotic
<br>>listening task, the number of attributes specified in the trial list
<br>>is becoming enormous (one sound for each slide, as well as one
<br>>image). I imagine that this can be done with a Inline in a less
<br>>sloppy way, but I'm not sure how to do this. I checked out the
<br>>"criterion based exit" sample you recommended, but, from what I've
<br>>understood, in the sample the trials are simply repeated, but not
<br>>modified as the experiment goes on, so I've been unable to transfer
<br>>it to my experiment.
<br>>
<br>>On Wednesday, August 14, 2013 12:32:38 AM UTC-3, Alexandre Nobre wrote:
<br>>Hello. I'm new to E-prime and am currently trying to implement an
<br>>experiment on identification of fragmented pictures, but can't
<br>>figure out how. Each trial in the experiment should initiate with
<br>>the presentation of a fragmented picture, to which the subject must
<br>>respond verbally. If the subject identifies it correctly, the
<br>>experimenter initiates the next trial, with a different fragmented
<br>>picture. However, if the object is named incorrectly, the same
<br>>picture appears on the screen, but in a less fragmented form. Also,
<br>>I need to have six different levels of fragmentation, so that, if
<br>>the subject can`t identify the picture correctly on any level, the
<br>>next trial is initiated, with a new fragmented picture. Does anyone
<br>>know how to do this?
<br>
<br></blockquote></div>
<p></p>
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