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Under item response theory, test equating involves finding the coefficients of a linear trans formation of the metric of one test to that of another. A procedure for finding these equating coefficients when the items in the two tests are nominally scored was developed. A quadratic loss function...
Social-psychological variables are typically measured using either cumulative or unfolding response processes. In the former, the greater the location of a person relative to the location of a stimulus on the continuum, the greater the proba bility of a positive response; in the latter, the...
Under the linear logistic test model, a weight is assigned to each cognitive operation used to respond to an item. The allocation of these weights is open to misspecification that can result in faulty estimates of the basic parameters. The effect on root mean squares (RMSS) of the differ ence...
The delta method was used to derive standard errors (SEs) of the Levine observed score and Levine true score linear equating methods. SEs with a normality assumption as well as without a nor mality assumption were derived. Data from two forms of a test were used as an example to evalu ate the...
Previous attempts at incorporating expert test construction practices into computerized adaptive testing paradigms are described. A new method is presented for incorporating a large number of con straints on adaptive item selection. The meth odology emulates the test construction practices of...
Many estimators of the measure of agreement between two dichotomous ratings of a person have been proposed. The results of Fleiss (1975) are extended, and it is shown that four estimators— Scott's (1955) π coefficient, Cohen's (1960) k, Maxwell & Pilliner's (1968) r,,, and Mak's (1988) p—are...
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