An assessment of Stout's index of essential unidimensionality
Loading...
View/Download File
Persistent link to this item
Statistics
View StatisticsJournal Title
Journal ISSN
Volume Title
Title
An assessment of Stout's index of essential unidimensionality
Published Date
1996
Publisher
Type
Article
Abstract
A simulation study was conducted to evaluate the
dependability of Stout’s T index of unidimensionality as
used in his DIMTEST procedure. DIMTEST was found to
dependably provide indications of unidimensionality, to
be reasonably robust, and to allow for a practical demarcation
between one and many dimensions. The procedure
was not affected by the method used to identify
the initial subset of unidimensional items. It was, however,
found to be sensitive to whether the multidimensional
data arose from a compensatory model or a
partially compensatory model. DIMTEST failed when the
matrix of tetrachoric correlations was non-Gramian and
hence is not appropriate in such cases. Index terms:
DIMTEST, essential unidimensionality, factor analysis,
item response models, Stout’s test of unidimensionality,
tetrachoric correlations, unidimensionality.
Keywords
Description
Related to
Replaces
License
Series/Report Number
Funding information
Isbn identifier
Doi identifier
Previously Published Citation
Hattie, John, Krakowski, Krzysztof, Rogers, H. Jane & Swaminathan, Hariharan. (1996). An assessment of Stout's index of essential unidimensionality. Applied Psychological Measurement, 20, 1-14. doi:10.1177/014662169602000101
Suggested citation
Hattie, John; Krakowski, Krzysztof; Rogers, H. Jane; Swaminathan, Hariharan. (1996). An assessment of Stout's index of essential unidimensionality. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/119049.
Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.