A group of covariance structure models was examined to ascertain the similarity between conventionally administered and computerized adaptive versions of the Differential Aptitude Test (DAT). Results for 332 students indicate that the computerized version of the DAT is an adequate representation of the conventional test battery. (TJH)

Effects of numbers of experts (NOEs) and common items (CIs) on the scaling of cutting scores from expert judgments were studied for 11,917 physicians taking 2 forms of a medical specialty examination. Increasing NOEs and CIs reduced error; beyond 5 experts and 25 CIs, error differences were small. (SLD)

Two local methods for observed-score equating are applied to the problem of equating an adaptive test to a linear test. In an empirical study, the methods were evaluated against a method based on the test characteristic function (TCF) of the linear test and traditional equipercentile equating applied to the ability estimates on the adaptive test…

Although behaviorally anchored rating scales have both intuitive and empirical appeal, they have not always yielded superior results in contrast with graphic rating scales. Results indicate that the choice of an anchoring procedure will depend on the nature of the actual rating process. (Author/JKS)

The effect of multiple-choice (MC) or open-ended (OE) response format on diagnostic assessment of algebra test performance was investigated with 231 eighth and ninth graders in Tel Aviv (Israel) using bug or rule space analysis. Both analyses indicated closer similarity between parallel OE subsets than between stem-equivalent OE and MC subsets.…

Effects of passage and item-scrambling on equipercentile and item-response theory equating were investigated using 2 scrambled versions of the American College Testing Program Assessment for approximately 25,000 examinees. Results indicate that using a base-form conversion table with a scrambled form affects the individual examinee level. (SLD)