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Download full textEignor, Daniel R.; Cook, Linda L. – 1983
The purpose of this study was to determine the extent to which item parameters estimated on pretest data from the verbal section of the Scholastic Aptitude Test (SAT) can be used for equating purposes in a situation where intact final form SAT testing data have normally been used. Items appearing in two final SAT-verbal forms were calibrated…
Descriptors: Aptitude Tests, College Entrance Examinations, Equated Scores, Feasibility Studies
Chang, S. Tai; Bashaw, W. L. – 1984
The purpose of this study was twofold: to investigate to what extent characteristics of anchor tests may affect precision of item calibration, and to estimate to what extent precision of item calibration may be affected by removal of persons whose response patterns deviate from those normally expected from the Rasch one-parameter logistic model.…
Descriptors: Aptitude Tests, Difficulty Level, Equated Scores, Junior High Schools
Embretson, Susan Whitely – 1982
Latent trait models are presented that can be used for test design in the context of a theory about the variables that underlie task performance. Examples of methods for decomposing and testing hypotheses about the theoretical variables in task performance are given. The methods can be used to determine the processing components that are involved…
Descriptors: Aptitude Tests, Difficulty Level, Estimation (Mathematics), Hypothesis Testing
Jones, Douglas H.; And Others – 1984
How accurately ability is estimated when the test model does not fit the data is considered. To address this question, this study investigated the accuracy of the maximum likelihood estimator of ability for the one-, two- and three-parameter logistic (PL) models. The models were fitted into generated item characteristic curves derived from the…
Descriptors: Ability, Aptitude Tests, Error of Measurement, Estimation (Mathematics)
Schratz, Mary K. – 1986
A computerized adaptive testing version of the Armed Services Vocational Aptitude Battery (CAT-ASVAB) is being developed to test ten areas of vocational aptitude. Development of the CAT-ASVAB is based upon the use of item banks, testing and scoring procedures, assessment of test reliability and test validity, a technical manual, and the…
Descriptors: Adaptive Testing, Adults, Aptitude Tests, Computer Assisted Testing
Zimowski, Michele F.; Wothke, Werner – 1987
Tests of spatial ability were analyzed for their analog (visuospatial) and nonanalog (verbal reasoning) components, using factor analyses of items and test scores. The self-selected sample consisted of over 2000 clients (average age about 26 or 27) employing the Johnson O'Connor Research Foundation's aptitude evaluation services in 12 metropolitan…
Descriptors: Adults, Aptitude Tests, Content Validity, Factor Analysis
