Background: Most standardized intelligence tests require more than 1hour for administration, which is problematic when evaluating individuals with intellectual disabilities and developmental disabilities (IDDD), because a significant proportion of these individuals can not tolerate lengthy evaluations. Furthermore, most standardized intelligence…

Many of the currently available statistical indexes to detect answer copying lack sufficient power at small [alpha] levels or when the amount of copying is relatively small. Furthermore, there is no one index that is uniformly best. Depending on the type or amount of copying, certain indexes are better than others. The purpose of this article was…

Many academic tests (e.g. short-answer and multiple-choice) sample required knowledge with questions scoring 0 or 1 (dichotomous scoring). Few textbooks give useful guidance on the length of test needed to do this reliably. Posey's binomial error model of 1932 provides the best starting point, but allows neither for heterogeneity of question…

This paper presents a method for estimating the accuracy and consistency of classifications based on test scores. The scores can be produced by any scoring method, including the formation of a weighted composite. The estimates use data from a single form. The reliability of the score is used to estimate its effective test length in terms of…

The relationship of several individual differences variables to Computer Adaptive Testing (CAT) as compared with traditional written tests are explored. Seven hundred sixty-five examinees took a Computer Adaptive Test and two fixed-length written tests. Each examinee also answered a computer literacy inventory, a satisfaction questionnaire, and a…

In a variable-length adaptive test with a stopping rule that relied on the asymptotic standard error of measurement of the examinee's estimated true score, M. S. Stocking (1987) discovered that it was sufficient to know the examinee's true score and the number of items administered to predict with some accuracy whether an examinee's true score was…

The standard error of measurement (SEM) is a measure of the inconsistency in the scores of a particular group of test-takers. It is largest for test-takers with scores ranging in the 50 percent correct bracket; with nearly perfect scores, it is smaller. On tests used to make pass/fail decisions, the test-takers' scores tend to cluster in the range…

Concern about passing those examinees who should pass, and retaining those who need remedial work, is one problem related to criterion-referenced testing. This paper deals with one aspect of that problem. When determining how many items to include on a criterion-referenced test, practitioners must resolve various non-statistical issues before a…

The present study investigated the comparative interpretive efficacy of the Faschingbauer Abbreviated MMPI (FAM) and standard MMPI with a sample of psychiatric inpatients. A secondary goal was to estimate the functioning effective test length of the FAM as compared to the standard MMPI. (Author/RK)

To test further for efficacy of three-option achievement items, parallel three- and five-option item tests were distributed randomly to college students. Results showed no differences in mean item difficulty, mean discrimination or total test score, but a substantial reduction in time spent on three-option items. (Author/BS)

This study evaluated the degree to which 102 undergraduate participants objected to questions on the Minnesota Multiphasic Personality Inventory (MMPI) which referred to sex, religion, bladder and bowel functions, family relationships, and unusual thinking in comparision to degree of objection to length of the MMPI and repetition of questions.…

Among the most popular techniques used to estimate item response theory (IRT) parameters are those used in the LOGIST and BILOG computer programs. Because of its accuracy with smaller sample sizes or differing test lengths, BILOG has become the standard to which new estimation programs are compared. However, BILOG is still complex and…

In this study, items were drawn from a full-length test of 30 items in order to construct shorter tests for the purpose of making accurate pass/fail classifications with regard to a specific criterion point on the latent ability metric. A three-item parameter Item Response Theory (IRT) framework was used. The criterion point on the latent ability…

Procedures for establishing standards and determining the number of items needed in criterion referenced measures were reviewed. Discussion of setting a passing score was organized around: performance of others, item content, educational consequences, psychological and financial costs, and error due to guessing and item sampling. (Author)

Eight subtests were selected from the Wechsler Intelligence Scale for Children--Third Edition (WISC-III) to make a short form for clinical use. Results with the 2,200 children from the WISC-III standardization sample indicated the adequate reliability and validity of the short form for clinical use. (SLD)