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Foundation ::
Psychometrics ::
PWC
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PWC
Pairwise Comparison Software: Software Program for Pairwise Comparison Task for Psychometric Scaling and Cognitive Research
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Moderators:
Adopt This Application!
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SOURCE CODE AVAILABLE
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PWC is used for pair-wise comparisons in both psychometric scaling
techniques and cognitive research. The cognitive tasks and processes of a
human operator of automated systems are now prominent considerations when
defining system requirements.
Recent developments in cognitive research have
emphasized the potential utility of psychometric scaling techniques, such as
multidimensional scaling, for representing human knowledge and cognitive
processing structures. Such techniques involve collecting measurements of
stimulus-relatedness from human observers. When data are analyzed using this
scaling approach, an n-dimensional representation of the stimuli is
produced. This resulting representation is said to describe the subject's
cognitive or perceptual view of the stimuli.
PWC applies one of the many techniques commonly used to acquire the data
necessary for these types of analyses: pair-wise comparisons. PWC
administers the task, collects the data from the test subject, and formats
the data for analysis. It therefore addresses many of the limitations of the
traditional "pen-and-paper" methods. By automating the data collection
process, subjects are prevented from going back to check previous responses,
the possibility of erroneous data transfer is eliminated, and the burden of
the administration and taking of the test is eased. By using randomization,
PWC ensures that subjects see the stimuli pairs presented in random order,
and that each subject sees pairs in a different random order.
PWC carries the NASA case number LAR-15143. It was originally released as part of the NASA COSMIC collection.
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