-- David McFarlane, Professional Faultfinder
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>Heh David,
>
>I was considering doing the exact same thing ^.^ Yet... there doesn't
>seem to be any WSCT scripts available on the net (anymore?).
>
>So Maaike/Mieke, you're not really helped with that.
Indeed, I must apogize for rushing to judgment with my earlier
response. I am familiar with the library of E-Prime programs
provided by STEP, ran a Google search, and saw that STEP came up as
the top hit, so I simply assumed that the link went to the desired
example program. Only later did I notice that the link went to a
.pdf - oh oh! And when I followed that link I found that the .pdf
simply mentioned the WCST as part of the plans for the future of
STEP, and it seems that never happened. (Come to think of it, in the
2001 article in Beh Res Methods, Instr & Computers the authors
envisioned a grand plan for E-Prime, which has not come about). So
my earlier response did not provide the desired help.
As far as I can tell no one has made an E-Prime WCST available on the
Web. It would be quite interesting to make one. As I recall, in
essence the task involves operantly rewarding the subject for
correctly following an undisclosed rule, changing the rule whenever
the subject achieves an overall success criterion, and seeing how
well the subject can adapt to the changing rules. This would require
some interesting code in E-Prime, in particular scoring the success
rate and then changing the "correct" rule on the fly, but it could be
done. Wish I had the liberty to do it myself.
The WCST started off with simple printed materials administered
manually by a human examiner. Clearly the WCST does not require
millisecond precision. So if we simply want to automate it, why use
such an expensive, specialized, and heavyweight platform as
E-Prime? Wouldn't it make more sense to use some more common
platform such as JavaScript, or Flash, or Python, or even straight
Visual Basic? Note that the WCST was automated using simple Turbo
Basic (for DOS?) as far back as 1996. Isn't this another case of,
"When all you have is a hammer, every problem looks like a nail" Or,
insofar as I have not kept up with the literature on the WCST, am I
just missing something that is obvious to the rest of you?
Also, apparently scoring the test is quite complex (perseverative
errors, nonperseverative errors, etc.), so building that into the
program (as opposed to leaving that to later data analysis) would
take some care.
Finally, did anyone else know that the term "Wisconsin Card Sorting
Test" was trademarked by Wells Printing and Digital Services of
Madison, Wisconsin, USA (see
http://en.wikipedia.org/wiki/Wisconsin_card_sort )? So we cannot
give the name "Wisconsin Card Sorting Test" to any printed materials
that we produce, but since the trademark does not cover computerized
versions we may continue to use the name "Wisconsin Card Sorting
Test" for our computerized versions.
With all that said, note that someone did make an automated WCST demo
for Inquisit's Millisecond
(http://www.millisecond.com/download/samples/v3/CardSort ), though I
do not know what data it stores or how it handles the test scoring.
-- David McFarlane, Professional Faultfinder
Well, despite the reservations I expressed earlier, on my own time I
went ahead and threw together a working skeleton in EP for the WCST,
just to flex my E-Prime muscles. The basic control logic is really
quite simple, and with a couple of tricks (e.g., nested attribute
references) the E-Prime design is rather sleek.
I would like to complete this project to my usual professional
standards and then submit it for inclusion in the public STEP library
so that everyone can use it. In short, I aim to make this no less
than a completely faithful computerized replica of the standardized
test, in EP. But to do that I will need many more specific details
on the mechanics of the standardized test. E.g., I have been told
that the standardized test presents the "response" cards in the same
pre-ordained sequence for each run, and I need to know that
sequence. Also, if I can get hold of the scoring rules then I might
even have a whack at that, although I think it enough just to have
the program administer the test & record raw data. (It would also be
nice if I could get someone else to do the card graphics, as I am
lousy at graphics -- I would need only 16 image files, not all 64,
since I know how to make EP change the colors.) I should be able to
learn all I need from the official WCST Manual, with perhaps a look
at a printed card deck. But a manual costs $115, and a card deck
$170, more than I care to spend for something that is, for me at
least, only a hobby project.
So here's the deal: If any of you can help me get access to
materials that fully specify the mechanics of the test (ideally the
printed Manual and/or cards) then I will complete this project in
short order and you will all have a professional quality WCST in EP.
-- David McFarlane, Professional Faultfinder
Thanks,
David McFarlane, Professional Faultfinder
Now I need to finish this project and submit it to STEP. I will
probably do this in stages. As stated earlier, programming the basic
control logic for merely administering the test is the easy part, and
I have that worked out already with a mere text-only
keyboard-response model. Adding the graphics and improving the
response methods will take a little more tedious work. I might
submit a first draft once I get that far.
Then the hard work comes when I add computation of all the customary
raw WCST scores. With that accomplished I would consider the project
finished -- I have no hope of going the extra yard to have it convert
raw summary scores into demographically corrected normed scores, for
that users will need to consult the Wisconsion Card Sorting Test
Manual, Revised and Expanded, by Robert K. Heaton et al. (1993),
Psychological Assessment Resources, Inc., Lutz, Florida, USA, or use
WCST scoring software.
-- David McFarlane, Professional Faultfinder