Fixed Order of Pictures

[David McFarlane]

JL,

Taking a break from my labors and catching up on a couple of Group threads...

Just amplifying what Mich said...  I assume that 
you mean a single visual stimulus display with 
four pictures.  For this I would use a Slide with 
four SlideImages, one for each picture.  Then I 
would use SlideState.HitTest to get mouse 
responses.  For details, see the 
SlideState.HitTest topic in the online E-Basic 
Help, and the "Response Areas for Mouse Input" 
sample from the PST web site.  You will have to 
extend their example to handle four valid mouse 
clicks [FN1].  I would then probably store the 
"hits" in an array, and then as Mich said use a 
loop to compare those hits, in order, against the 
answer key.  This does all require a fair amount of inline code.

As for the feedback display, I would use a single 
Slide with two states, one for the "correct" 
sound & visual, and another for the "incorrect" 
sound & visual, and then add a bit of code to 
select the appropriate Slide.ActiveState (see the 
online E-Basic Help).  But that's just me, 
ordinary people would use a pair of Slides and 
then Labels and Gotos to select which one gets used.

Finally, as Mich says E-Prime is not well suited 
to animations, unless you do not mind writing 
even more inline code to run it.  Otherwise, if 
you have EP2 then you might run a SlideMovie 
within the feedback Slide, or in any case just 
skip the animation and stick with an informative 
static image or even good old text (I am rather a text snob myself).

All in all, nothing that cannot be done in 
E-Prime without a little bit of ingenuity and general programming skills.

-- David McFarlane, Professional Faultfinder

FN1: I actually wrote a library of Functions & 
Subs to help with this sort of thing and would be 
happy to post that on the Group if someone would 
send me instructions on how to do that.


At 5/7/2010 06:59 AM Friday, you wrote:
>Hiya,
>Long-winded? How long do you suppose any answer 
>would be to this question :) No, seriously, if 
>you have gone through the tutorial, and maybe 
>even our little guide, you might understand that 
>what you are asking is indeed a little tricky on a number of levels:
>1. Four pictures, dumped in a slide, but: 
>clicking on them (oomph). There's an example in 
>the e-prime online help thing where they have 
>this hit-test for mouse-clicking operations. I'm 
>sure it's here somewhere in this mailinglist as 
>well, certainly discussed a few times. Just make sure you save the response.
>2. Four clicks, not one, is most easily achieved 
>(I say), by having four slides (with four 
>hit-tests); just make copies of them by control+dragging them.
>3. Four responses... If you have one attribute, 
>say "CorrectResponse", and four responses to 
>slides pic1 pic2 pic3 pic4, you could just do something like:
>c.SetAttrib "Y_Resp", pic1.Resp & pic2.Resp & pic3.Resp & pic4.Resp.
>if c.GetAttrib ("Y_Resp") = c.GetAttrib 
>("CorrectResponse") then c.SetAttrib "Y_ACC", 1 else c.SetAttrib "Y_ACC", 0
>4. But of course, you want more than that, 
>compare each response individually. Of course, 
>you could just have four correct responses and 4 
>responses, so I suppose you'd end up with four 
>"Y_resp"s (Y_resp1...4) and four "CorrResps" (CorrResp1..4).
>5. Assuming you don't want to go for animations 
>(in which case I'd suggest abandoning E-Prime 
>altogether, because your whole thing is MUCH 
>more easily achieved in Flash to begin with), you might do something like:
>Dim I as integer
>For I = 1 to 4
>         If c.GetAttrib ("Y_Resp" & cstr(i)) = 
> c.GetAttrib("CorrResp" & cstr(i)) then SoundWRONG.play else SoundRIGHT.play
>Next I
>... that is, assuming you have made two 
>soundbuffers (SoundWrong and SoundRight), but 
>this is pretty well documented in the ebasic help.
>
>Best,
>Mich
>
>Michiel Spapé
>Research Fellow
>Perception & Action group
>University of Nottingham
>School of Psychology
>
>
>-----Original Message-----
>From: e-prime at googlegroups.com 
>[mailto:e-prime at googlegroups.com] On Behalf Of JL
>Sent: 06 May 2010 22:35
>To: E-Prime
>Subject: Fixed Order of Pictures
>
>Hi there,
>
>I'm new to E-Prime and finding it a little tricky. I'm wondering is it
>possible to make a level whereby four pictures are presented and they
>must be clicked on in a certain fixed order? So for example if the
>fixed order is pic1, pic 2, pic3, pic 4 and the subject clicks pic
>1,3,2,4 then for the clicks that were correct a certain sound and
>animation will occur to let the person know and for the ones that were
>wrong another sound and animation will occur. And then I'd like to be
>able to compare what the subject clicked to what they were supposed to
>click?
>
>Sorry this is very long winded, any help would be much appreciated!

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