Fragmented pictures with multiple inputs
Alexandre Nobre
alpnobre at gmail.com
Sat Aug 31 20:27:22 UTC 2013
That worked well. Thank you David!
On Monday, August 26, 2013 5:22:38 PM UTC-3, McFarlane, David wrote:
>
> First, another general point about online disussions -- when you post
> a reply, *please* also include the previous messages from *both*
> parties, so that your correspondent can readily recall the proper
> context (look at my reply as an example). Just a little courtesy to
> spare your correspondent and other readers some work.
>
> So, the "criterion based exit" example shows you how to create a
> simple loop, now you just need to modify the stimulus each time
> through the loop. You could do that just by using an attribute
> reference in your stimulus (e.g., "[FragFile].bmp", and then using
> c.SetAttrib to set the attribute each time through the loop (see the
> Context.SetAttrib in the E-Basic Help facility) according to whatever
> algorithm you devise. You should be able to take it from there.
>
> -----
> David McFarlane
> E-Prime training
> online: http://psychology.msu.edu/Workshops_Courses/eprime.aspx
> Twitter: @EPrimeMaster (https://twitter.com/EPrimeMaster)
>
> /----
> Stock reminder: 1) I do not work for PST. 2) PST's trained staff
> take any and all questions at
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> strive to respond to all requests in 24-48 hours, so make full use of
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> get an answer from PST staff, please extend the courtesy of posting
> their reply back here for the sake of others.
> \----
>
>
> At 8/16/2013 07:25 PM Friday, Alexandre Nobre wrote:
> >Hi, David, thank you for the reply. I'm sorry for not being clear
> >about what I meant. I do have the fragmented pictures, actually. My
> >main problem is how to repeat the response slide in a single trial
> >until the participant identifies the picture correctly (which he
> >does verbally - the key press for repeating the same picture, but in
> >a less fragmented form, or for jumping to the next picture (trial)
> >is done by the experimenter). I need to have the slide change the
> >image it uses every time the participant emits a wrong response,
> >until they get it right or the last fragmented form has been displayed.
> >
> >I've been able to insert several slides and masks in the trial
> >procedure, so that, if the participant emits a wrong response, the
> >trial continues on to the next slide, which presents the same
> >picture in a less fragmented form. If they identify the picture
> >correctly, then he trial ends using a label. The problem with this
> >is that, because this task is done simultaneously with a dichotic
> >listening task, the number of attributes specified in the trial list
> >is becoming enormous (one sound for each slide, as well as one
> >image). I imagine that this can be done with a Inline in a less
> >sloppy way, but I'm not sure how to do this. I checked out the
> >"criterion based exit" sample you recommended, but, from what I've
> >understood, in the sample the trials are simply repeated, but not
> >modified as the experiment goes on, so I've been unable to transfer
> >it to my experiment.
> >
> >On Wednesday, August 14, 2013 12:32:38 AM UTC-3, Alexandre Nobre wrote:
> >Hello. I'm new to E-prime and am currently trying to implement an
> >experiment on identification of fragmented pictures, but can't
> >figure out how. Each trial in the experiment should initiate with
> >the presentation of a fragmented picture, to which the subject must
> >respond verbally. If the subject identifies it correctly, the
> >experimenter initiates the next trial, with a different fragmented
> >picture. However, if the object is named incorrectly, the same
> >picture appears on the screen, but in a less fragmented form. Also,
> >I need to have six different levels of fragmentation, so that, if
> >the subject can`t identify the picture correctly on any level, the
> >next trial is initiated, with a new fragmented picture. Does anyone
> >know how to do this?
>
>
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