This report presents an analysis of the alignment between the grade level standards of the "South Dakota Standards in Mathematics" (December 1998) and test items from the Stanford Achievement Tests, Ninth Edition (Stanford 9). The tests of interest were: (1) Form S, Primary 2 (grade 2); (2) Form S, Intermediate 1 (grade 4); (3) Form S,…

A study was conducted to identify local item dependence (LID) in the context-dependent item sets used in an examination prepared for use in an introductory university physics class and to assess the effects of LID on estimates of the reliability and standard error of measurement. Test scores were obtained for 487 students in the physics class. The…

In item calibration using LOGIST (M. Wingersky, R. Patrick, and F. Lord, 1987), when the program determines that it cannot accurately estimate the c-parameter for a particular item due to insufficient information at the lower levels of ability, an estimate of the c-parameters, called COMC, is obtained by combining all such items. The purpose of…

Test security has often been a problem in computerized adaptive testing (CAT) because the traditional wisdom of item selection overly exposes high discrimination items. The a-stratified (STR) design advocated by H. Chang and his collaborators, which uses items of less discrimination in earlier stages of testing, has been shown to be very…

In the a-stratified method, a popular and efficient item exposure control strategy proposed by H. Chang (H. Chang and Z. Ying, 1999; K. Hau and H. Chang, 2001) for computerized adaptive testing (CAT), the item pool and item selection process has usually been divided into four strata and the corresponding four stages. In a series of simulation…

A number of methods exist for detection of differential item functioning (DIF), but these methods tell us little about the causes of DIF. DIF is typically defined based on a relationship with some manifest group characteristic, such as gender or ethnicity, which is only weakly associated with DIF. What is lacking is a method that will lead to…

A client of American College Testing, Inc. (ACT) decided to implement a computer-based testing program to replace their paper-pencil format for professional certification. This paper reports on the results of the developed test after 1 year's use, especially as the results relate to test security issues. ACT research shows that a variable length…

New items are being calibrated for the next generation of the computerized adaptive (CAT) version of the Armed Services Vocational Aptitude Battery (ASVAB) (Forms 5 and 6). The requirements that the items be "good" three-parameter logistic (3-PL) model items and typically "like" items in the previous CAT-ASVAB tests have…

This study examined the effectiveness of the Sympson and Hetter conditional procedure (SHC), a modification of the Sympson and Hetter (1985) algorithm, in controlling the exposure rates of items in a computerized adaptive testing (CAT) environment. The properties of the procedure were compared with those of the Davey and Parshall (1995) and the…

Item selection methods in computerized adaptive testing (CAT) can yield extremely skewed item exposure distribution in which items with high "a" values may be over-exposed while those with low "a" values may never be selected. H. Chang and Z. Ying (1999) proposed the a-stratified design (ASTR) that attempts to equalize item…

An item response theory (IRT) model is used as a measurement error model for the dependent variable of a multilevel model where tests or questionnaires consisting of separate items are used to perform a measurement error analysis. The advantage of using latent scores as dependent variables of a multilevel model is that it offers the possibility of…

What are the purposes of exams? Would teachers give exams if they were not grading students? Exams provide information that should inform the instructional program, let the students know their strengths as well as areas for growth, and tell teachers what information their students know and what they still need to know. When determining how…

Argues that multiple choice tests can be effective only if the items are written in a format suitable for testing the mastery of specific instructional objectives. Proposes the use of nonrestrictive test items and cites examples of such items. (FL)

The article presents translations of Chinese college entrance examinations in the fields of politics, Chinese language and literature, mathematics, humanities, physics, chemistry, history, geography, and English. Translations are also presented of the 1979 review syllabus for 1979 for the same subject areas. (DB)