iii Brennan Equity The notion of equity in equating was introduced by Lord (1980. pp. 195ff). The basic idea is that for any true score on Form Y, the distribution of observed scores on Form Y should be the same as the distribution of converted scores on Form X (see Kolen & Brennan, 2004. pp. 10–11). If this goal is achieved, Lord argued, then it should be a matter of indifference to each and e...

Methods and Results for application of the quantile equating method to data from 1 H-NMR analysis of urine samples. For plasma LC-MS and 1 H-NMR data, PC1–PC2 loadings plots and lists with variables having lowest B1–B2 correlation of quantile values before equating. Typical examples of plasma 1 H-NMR spectra.

As part of its nonprofit mission, ETS conducts and disseminates the results of research to advance quality and equity in education and assessment for the benefit of ETS's constituents and the field. To obtain a PDF or a print copy of a report, please visit: Abstract In a common-item (anchor) equating design, the common items should be evaluated for item parameter drift. Drifted items are often ...

PURPOSE This study examined the use of the Tucker linear equating method in producing an individual student's score in 3 groups with bridging stations over 3 consecutive days of the clinical performance examination (CPX) and compared the differences in scoring patterns by bridging number. METHODS Data were drawn from 88 examinees from 3 different CPX groups-DAY1, DAY2, and DAY3-each of which ...

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There is variability in the estimation of an equating transformation because commonitem parameters are obtained from responses of samples of examinees. The most commonly used standard error of equating quantifies this source of sampling error, which decreases as the sample size of examinees used to derive the transformation increases. In a similar way of reasoning, the common items that are emb...