The number of Guttman errors as a simple and powerful person-fit statistic
1994
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The number of Guttman errors as a simple and powerful person-fit statistic
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1994
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Abstract
A number of studies have examined the power of
several statistics that can be used to detect examinees
with unexpected (nonfitting) item score patterns, or to
determine person fit. This study compared the power
of the U3 statistic with the power of one of the simplest
person-fit statistics, the sum of the number of
Guttman errors. In most cases studied, (a weighted
version of) the latter statistic performed as well as the
U3 statistic. Counting the number of Guttman errors
seems to be a useful and simple alternative to more
complex statistics for determining person fit. Index
terms: aberrance detection, appropriateness measurement,
Guttman errors, nonparametric item response
theory, person fit.
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Meijer, Rob R. (1994). The number of Guttman errors as a simple and powerful person-fit statistic. Applied Psychological Measurement, 18, 311-314. doi:10.1177/014662169401800402
Suggested citation
Meijer, Rob R.. (1994). The number of Guttman errors as a simple and powerful person-fit statistic. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/117001.
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