RMT 16:1 Quotations and Notations
"When schemes are laid in advance, it is surprising how often the circumstances fit in with
Sir William Osler (1849-1919)
"If the facts don't fit the theory, change the facts."
Attributed to Albert Einstein (1879-1955)
"Therefore, one might expect the emergence of only one factor when a factor analysis would be
performed on all newly defined subsets [of unidimensional items]. However, factor analysis of the
newly defined subsets yielded two factors. Further inspection of the factor plot showed that the
emergence of a second factor could be considered as an artefact due to the skewness of the subset
Van der Ven, A.H.G.S., & Ellis, J.L. (2000). A Rasch Analysis of Raven's Standard Progressive Matrices. Personality and Individual Differences, 29 (1), 45-64.
"The most valuable contribution to the area of tests of fit for Rasch models in recent years has
been the recognition by some psychometricians that there is no such thing as a final `fit' of data
to the model and hence that no one test is ever likely to be complete. Appreciation of this point
still needs to be given much
wider circulation among workers in the field. Then there will be less of a tendency to reject data
sets (or the model) outright, simply because one test failed to show `fit'. Implicit in this
perspective is the assumption that there is as much to be learnt about a data set from the responses
which misfit as there is from those which do fit."
Graham Douglas (1982) Issues in the fit of data to psychometric models. Education Research and Perspectives, 9:1, p. 43.
RMT 16:1 Quotations and Notations. 16:1 p.860ff.
RMT 16:1 Quotations and Notations. Rasch Measurement Transactions, 2002, 16:1 p.860ff.
|Rasch Measurement Transactions (free, online)||Rasch Measurement research papers (free, online)||Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch||Applying the Rasch Model 3rd. Ed., Bond & Fox||Best Test Design, Wright & Stone|
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