Re: need MDS discussion

[Colette Mckay <C.M.Mckay@xxxxxxxxxxx>]

Not a reference but some experience: With cochlear implantees, we once tried
the triadic comparison method (where you either play three sounds and ask
which were the most similar and which were the most different, or you play
the three possible pairs and ask the same questions). We found that they
found the task very confusing. We therefore went (successfully) to the
method of playing single pairs and asking them to rank the difference along
a line from most-different to most-similar.  Of course the latter method
requires the subjects to familiarise themselves with the stimuli before
starting, and some practice in the task.
Colette McKay

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Colette McKay
Professor in Auditory Science
Neuroscience Research Institute
Aston University
Aston Triangle, Birmingham, B4 7ET
email: c.m.mckay@xxxxxxxxxxx
Phone +44 (0)121 204 4099
Fax +44 (0)121 204 3886
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-----Original Message-----
From: AUDITORY Research in Auditory Perception
[mailto:AUDITORY@xxxxxxxxxxxxxxx] On Behalf Of beaucham
Sent: 02 April 2005 00:13
To: AUDITORY@xxxxxxxxxxxxxxx
Subject: [AUDITORY] need MDS discussion

We are looking into doing a multidimensional scaling test
on a group of sounds and would like to read about the pros
and cons of using subject rating of the similarity of pairs
of sounds (e.g., on a 0 to 10 scale) vs. judging which of
two pairs presented in rapid succession is most similar.
Please let me know if you know of a reference which discusses
this point.

Jim Beauchamp
Univ. of Illinois at Urbana-Champaign
jwbeauch@xxxxxxxx