This booklet grew out of a half-day class on equating that author Samuel Livingston teaches for new statistical staff at Educational Testing Service (ETS). The class is a nonmathematical introduction to the topic, emphasizing conceptual understanding and practical applications. The class consists of illustrated lectures, interspersed with…

This study assessed the interpretability of scaled scores based on either number correct (NC) scoring for a paper-and-pencil test or one of two methods of scoring computer-based tests: an item pattern (IP) scoring method and a method based on equated NC scoring. The equated NC scoring method for computer-based tests was proposed as an alternative…

This paper describes an empirical evaluation of a Bayesian procedure for equating scores on test forms taken by small numbers of examinees, using collateral information from the equating of other test forms. In this procedure, a separate Bayesian estimate is derived for the equated score at each raw-score level, making it unnecessary to specify a…

This manual was written to provide technical information regarding the 2002 Series GED (General Educational Development) Tests. Throughout this manual, documentation is provided regarding the development of the GED Tests, data collection activities, as well as reliability and validity evidence. The purpose of this manual is to provide evidence…

In September 2005 the National Foundation for Educational Research (NFER) in association with the Department for Education and Skills (DfES), the Sutton Trust and the College Board, began a five-year research study to examine the validity of an aptitude test in higher education admissions. This report describes and explores the relationships…

An instructional module is presented to promote a conceptual understanding of test form equating using traditional methods. Equating is distinguished from scaling. The equating methods described are: (1) mean; (2) linear; and (3) equipercentile. The module includes a self-test. (SLD)

This paper provides the basis for understanding score equating through item response theory (IRT). Theoretical justifications and practical advantages of IRT true-score test procedures are discussed. Three steps in the equating process are specified, and a self-test is included. (SLD)

This digest is designed to provide information to Texas testing coordinators, other educators, and interested citizens about the development procedures and technical attributes of the state-mandated criterion-referenced assessment program. The chapters are: (1) "Background"; (2) "Test Development"; (3) "Test…

This manual contains preliminary information, largely of a technical nature, about the enhanced American College Testing (ACT) Program introduced in October 1989. It focuses primarily on the tests of educational development, the component of the program that has been substantially revised. Although one-third of the ACT Interest Inventory Items has…

In June 1989, third, sixth, and ninth graders in Alberta (Canada) were administered standardized tests in English, Social Studies, and Science, respectively. This report presents results of these tests at each grade level and by gender, with comparative data from 1985. Data for 31,998 third graders (English), 29,918 sixth graders (social studies),…