The Rasch model for test analysis is described and compared with two-parameter and three-parameter latent-trait models. Conditional maximum likelihood equations for estimating item parameters are derived, and estimates of person parameters are described together with their confidence intervals. Goodness of fit tests are discussed, including a…

To assess the stability of the Scholastic Aptitude Test verbal score scale SAT--V, 1963 and 1973 forms of the SAT--V were administered in counterbalanced order to spaced samples of the same group. The 1973 scores were placed on the reporting scale used for the 1963 form. The experimentally derived scores on the 1963 scale were compared with their…

Score linkages between the Verbal and Math sections of the SAT® I: Reasoning Test and the corresponding sections of the new version of a Spanish-language admissions test, the Prueba de Aptitud Academica® (PAA™) were investigated. A bilingual group design was employed. A language proficiency measure (ESLAT) was used to define the bilingual group…

From 1970 to 1985, the Scholastic Aptitude Test (SAT) underwent major modifications caused by: (1) the addition of the Test of Standard Written English (TSWE) to the College Board's Admissions Testing Program (ATP); (2) the passage of test disclosure legislation; (3) the institution of test sensitivity reviews; and (4) the use of item response…

A study involving all students taking the California Achievement Test (CAT) in the Cleveland City School District (Ohio) during the fall of 1989 was conducted to assess the effects of the use of parallel test forms. Each spring, all students in grades 4, 6, and 8 are selected to take the appropriate level of the CAT reading test, Form E. As a…

This study addresses the test-disclosure-related need for more Graduate Record Examinations (GRE) General Test editions in a situation where the number of examinees is stable or declining. Equating is used to guarantee that examinees of different test editions are treated equitably. The data collection designs used in this study were: (1)…

This paper focuses on the questions which arise as test practitioners monitor score scales derived from latent trait theory. Large scale assessment programs are dynamic and constantly challenge the assumptions and limits of latent trait models. Even though testing programs evolve, test scores must remain reliable indicators of progress.…

Out of level testing is defined and reasons for administering out of level tests, especially in compensatory education programs are explained: (1) to achieve optimum test reliability; (2) to test student achievement--provided out of level test scores are interpreted in terms of the appropriate in-level population; (3) to avoid carelessness and…

To explain the discrepancy between median scores on the 1976 administration of the California Achievement Tests (CAT) and the Sequential Tests of Educational Progress (STEP) in the Austin Independent School District (AISD), ten technical variables typical of achievement tests were considered as explanations. (1) The STEP may measure different…

This volume contains tables of item analysis results obtained by following procedures associated with the Rasch Model for those reading tests used in the Anchor Test Study. Appendix I gives the test names and their corresponding analysis code numbers. Section I (Basic Item Analyses) presents data for the item analysis of each test in a two part…

The objective of this study was to show that standardized reading scores could be adequately estimated from scores on a criterion-referenced test in reading. This would reduce classroom test time, while, at the same time, provide the kinds of information teachers need to guide instruction, and the kinds of information administrators require for…

The Anchor Test Study (ATS) provides a method for translating a pupil's score on any one of eight widely used standardized reading tests for Grades 4, 5, and 6 to a corresponding score on any of the other seven tests, as well as furnishing new nationally representative norms for each of the eight tests. In addition, the Study presents new…

The Anchor Test Study provides a method for translating a pupil's score on any one of eight widely used standardized reading tests for Grades 4, 5, and 6 to a corresponding score on any of the other seven tests, as well as furnishing new nationally representative norms for each of the eight tests. In addition, the study presents new estimates of…

Computerized adaptive testing (CAT) has become increasingly common in large-scale testing programs. This paper considers relevant practical issues that are likely to be faced by the developers and managers of a CAT program. The first cluster of issues is that of item pool development and maintenance. It includes such considerations as item pool…

Item response model applications to National Assessment of Educational Progress (NAEP) data specifically aimed at the uses of item response models in mathematics item banking are discussed. Approaches for addressing goodness of fit were organized into three categories: Checks on model assumptions, expected features, and additional model…