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Fenton, Ray; Straugh, Tom; Stofflet, Fred; Garrison, Steve – 2000
This paper examines the efforts of the Anchorage School District, Alaska, to improve the validity of its writing assessment as a useful tool for the training of teachers and the characterization of the quality of student writing. The paper examines how a number of changes in the process and scoring of the Anchorage Writing Assessment affected the…
Descriptors: Change, Elementary School Students, Intermediate Grades, Scoring
Leung, Chi-Keung; Chang, Hua-Hua; Hau, Kit-Tai – 2000
Information based item selection methods in computerized adaptive tests (CATs) tend to choose the item that provides maximum information at an examinee's estimated trait level. As a result, these methods can yield extremely skewed item exposure distributions in which items with high "a" values may be overexposed, while those with low…
Descriptors: Adaptive Testing, Computer Assisted Testing, Selection, Simulation
Witta, E. Lea – 2000
The effectiveness of four methods of handling missing data in reproducing the target sample covariance matrix and mean vector was tested using three levels of incomplete cases: 30%, 50%, and 70%. Data were selected from the National Education Longitudinal Study (NELS) database. Three levels of sample sizes (500, 1000, and 2000) were used. The…
Descriptors: Databases, National Surveys, Research Methodology, Sample Size
Henson, Robin K.; Kogan, Lori R.; Vacha-Haase, Tammi – 2000
Teacher efficacy has proven to be an important variable in teacher effectiveness. It is consistently related to positive teaching behaviors and student outcomes. However, the measurement of this construct is the subject of current debate, which includes critical examination of predominant instruments used to assess teacher efficacy. The present…
Descriptors: Error of Measurement, Generalization, Measurement Techniques, Meta Analysis
Kelkar, Vinaya; Wightman, Linda F.; Luecht, Richard M. – 2000
The purpose of this study was to investigate the viability of the property of parameter invariance for the one-parameter (1P), two-parameter (2P), and three-parameter (3P) item response theory (IRT) models for the Medical College Admissions Tests (MCAT). Invariance of item parameters across different gender, ethnic, and language groups and the…
Descriptors: Ability, College Entrance Examinations, Difficulty Level, Ethnicity
Chang, Shun-Wen; Ansley, Timothy N.; Lin, Sieh-Hwa – 2000
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…
Descriptors: Adaptive Testing, Algorithms, Computer Assisted Testing, Item Banks
Chang, Shun-Wen; Hanson, Bradley A.; Harris, Deborah J. – 2000
This study presents and evaluates a method of standardization that may be used by test practitioners to standardize classical item statistics when sample sizes are small. The effectiveness of this standardization approach was compared through simulation with the one-parameter logistic (1PL) and three parameter logistic (3PL) models based on the…
Descriptors: Item Response Theory, Sample Size, Simulation, Statistical Analysis
Monahan, Patrick – 2000
Previous studies that investigated the effect of unequal ability distributions on the Type I error (TIE) of the Mantel-Haenszel chi-square test for detecting differential item functioning (DIF) simulated ability distributions that differed only in means. This simulation study suggests that the magnitude of TIE inflation is increased, and the type…
Descriptors: Ability, Chi Square, Item Bias, Simulation
Finch, Holmes; Huynh, Huynh – 2000
One set of approaches to the problem of clustering with dichotomous data in cluster analysis (CA) was studied. The techniques developed for clustering with binary data involve calculating distances between observations based on the variables and then applying one of the standard CA algorithms to these distances. One of the groups of distances that…
Descriptors: Algorithms, Cluster Analysis, Monte Carlo Methods, Responses
Lee, Jaekyung – 2000
This study considered two questions about the use of national and state assessment databases: (1) Do state and national assessments provide the same information on the performance of an educational system? and (2) What are the factors that might affect the discrepancies between national and state assessment results? Kentucky and Maine were chosen…
Descriptors: Case Studies, Comparative Analysis, Educational Change, Elementary Secondary Education
Huyhn, Huynh – 2000
Item mappings are widely used in educational assessment for applications such as test administration (through test form assembly and computer assisted testing) and for criterion-referenced (CR) interpretation of test scores or scale anchoring. Item mappings are also used to construct ordered item booklets in the CTB/McGraw Hill Bookmark standard…
Descriptors: Bayesian Statistics, Criterion Referenced Tests, Selection, Standard Setting (Scoring)
Huynh, Huynh – 2000
By noting that a Rasch or two parameter logistic (2PL) item belongs to the exponential family of random variables and that the probability density function (pdf) of the correct response (X=1) and the incorrect response (X=0) are symmetric with respect to the vertical line at the item location, it is shown that the conjugate prior for ability is…
Descriptors: Bayesian Statistics, Criterion Referenced Tests, Selection, Standard Setting (Scoring)
McDermott, Kathryn A. – 2000
This study analyzed data from year 1 of Project Choice, Connecticut's response to Sheff v. O'Neill, a 1989 school desegregation lawsuit. Project Choice is an interdistrict transfer program modeled on a program that began in Hartford in 1966. It allows suburban children to attend urban schools. For each child participating, the district where the…
Descriptors: Black Students, Diversity (Student), Educational Legislation, Educational Policy
Munkvold, Bjorn Erik; Line, Lars – 2000
Distributed collaboration supported by different forms of information and communication technologies (ICT) is becoming increasingly widespread. Effective realization of technology supported, distributed collaboration requires learning and careful attention to both technological and organizational aspects of the collaboration. Despite increasing…
Descriptors: Computer Assisted Instruction, Computer Mediated Communication, Cooperative Learning, Distance Education
Johnson, Celia E.; Templeton, Rosalyn Anstine; Wan, Guofang – 2000
This qualitative study explored the effects of the Second Step Curriculum, designed to teach the social skills necessary for children to peacefully solve problems and resolve conflicts through empathy training, impulse control, and anger management. The study focused on teachers' perceptions of the program: what they perceived to be the program…
Descriptors: Anger, At Risk Persons, Behavior Change, Conflict Resolution
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