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Applied Psychological Measurement, Volume 09, 1985  [34]

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An examination of the characteristics of unidimensional IRT parameter estimates derived from two-dimensional data

Ansley, Timothy N.; Forsyth, Robert A. (1985)
The purpose of this investigation was to study the nature of the item and ability estimates obtained when the modified three-parameter logistic model is used with two-dimensional data. To examine the effects of two-dimensional ...

A minimum chi-square method for developing a common metric in item response theory

Divgi, D. R. (1985)
The θ scale in item response theory has arbitrary unit and origin. When a group of items is calibrated twice, estimates from one calibration must be transformed to the metric of the other. A new method is presented for ...

Comparing fit of nonsubsuming probability models

Alvord, Gregory; Macready, George B. (1985)
A "mixture" probability model that incorporates two component models defined by nonsubsuming sets of parameters is introduced, and a strategy for using this model in the selection of a preferred component model is ...

Latent trait item analysis and facet theory--a useful combination.

Balla, John R.; McDonald, Roderick P. (1985)
Computer programs for fitting latent trait models to data provide indices of item misfit. An analysis of the consistency of item misfit determination is presented. Two content-equivalent forms of 71 items representing the ...

Chance baselines for INDSCAL's goodness-of-fit index

Dong, Hei-Ki (1985)
For purposes of evaluating INDSCAL’s goodness-of-fit index (R₁), random data were generated for various combinations of N (the number of individuals), ranging from 3 to 30, and n (the number of stimuli), ranging from ...

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