The factor structure of a new co-normed cognitive and achievement battery for children, the Differential Ability Scales (DAS) was investigated. The DAS was factor analyzed in conjunction with the Peabody Picture Vocabulary Test-Revised (PPVT-R), and the composite score of the Iowa Test of Basic Skills (ITBS). Subjects were 56 six- to…

The predictive power of the Split-Half version of the Wechsler Intelligence Scale for Children--Revised (WISC-R) Object Assembly (OA) subtest was compared to that of the full administration of the OA subtest. A cohort of 218 male and 49 female adolescent offenders detained in a Texas juvenile detention facility between 1990 and 1992 was used. The…

Standard errors and bias of unidimensional and multidimensional ability estimates were compared in a factorial, simulation design with two item response theory (IRT) approaches, two levels of test correlation (0.42 and 0.63), two sample sizes (500 and 1,000), and a hierarchical test content structure. Bias and standard errors of subtest scores…

The Texas Assessment of Academic Skills (TAAS) study describes either 3- or 4-year trends in average campus-level passing rates on TAAS at all grade levels. It discusses student, teacher, campus, and district characteristics as they may relate to student success on TAAS by looking at data for students in grades 4, 8, and 10 for four consecutive…

Three descriptive statistics (difficulty, discrimination, and reliability) of multiple-choice (MC) test items were compared to those of a new (1980s) format of machine-scored questions. The new method, answer-bank multi-digit testing (MDT), uses alphabetized lists of up to 1,000 alternatives and approximates the completion style of assessment…

The performance of the following four methodologies for assessing unidimensionality was examined: (1) DIMTEST; (2) the approach of P. W. Holland and P. R. Rosenbaum; (3) linear factor analysis; and (4) non-linear factor analysis. Each method is examined and compared with other methods using simulated data sets and real data sets. Seven data sets,…

A part-form methodology was used to study the effect of varying degrees of multidimensionality on the consistency of pass/fail classification decisions obtained from simulated unidimensional item response theory (IRT) based licensure examinations. A control on the degree of form multidimensionality permitted an assessment throughout the range of…

The aims of the present study were threefold: (1) to test for the equivalency of an hierarchical three-factor structure of the Beck Depression Inventory (BDI) across English and French versions for non-clinical adolescents; (2) given evidence of poor model fit, to validate the factorial structure of the BDI French version across three independent…

This paper explores the effectiveness of the Mantel-Haenszel (MH) statistic in detecting differentially functioning test items when the internal criterion is varied. Using a data set from the 1982 statewide administration of a 150-item life skills examination (the New Mexico High School Proficiency Examination), a randomly selected sample of 1,000…

A commonly accepted rule for developing equated examinations using the common-items non-equivalent groups (CINEG) design is that items common to the two examinations being equated should be identical. The CINEG design calls for two groups of examinees to respond to a set of common items that is included in two examinations. In practice, this rule…

This study examined the relationship between the Collegiate Assessment of Academic Proficiency Critical Thinking test (CAAP-CT) and the College Outcome Measures Program objective test battery (COMP). Focus was on determining: (1) the relationship between the CAAP-CT and the COMP process-oriented subscores and the freshman to sophomore gains in…

Based on material prepared for the California Assessment Program, an argument in favor of authentic assessment is presented, and authentic assessment is contrasted with traditional standardized tests. An assessment is authentic when student performance on intellectual tasks is directly examined. Comparatively, traditional assessment relies on…

The 1986 scores from the Statewide Student Assessment Test-II, a minimum-competency test required for high school graduation in Florida, were placed on the scale of the 1984 scores from that test using five different equating procedures: (1) linear method; (2) Rasch model; (3) three-parameter item response theory (IRT)--concurrent method; (4)…

A nominal response model-based computerized adaptive testing procedure (nominal CAT) was implemented using simulated data. Ability estimates from the nominal CAT were compared to those from a CAT based upon the three-parameter logistic model (3PL CAT). Furthermore, estimates from both CAT procedures were compared with the known true abilities used…

This study compares the McCarthy Scales of Children's Abilities (MSCA) and the Kaufman Assessment Battery for Children (K-ABC) profiles of successful and unsuccessful preschoolers with learning disabilities. Subjects, 40 preschool students, were tested at the beginning and at the end of the preschool year and were placed into repeating or…