Descriptor
Source
Publication Type
Reports - Research | 2 |
Speeches/Meeting Papers | 1 |
Education Level
Audience
Researchers | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
Armed Services Vocational… | 2 |
What Works Clearinghouse Rating
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)
Pommerich, Mary; Segall, Daniel O. – 2003
Research discussed in this paper was conducted as part of an ongoing large-scale simulation study to evaluate methods of calibrating pretest items for computerized adaptive testing (CAT) pools. The simulation was designed to mimic the operational CAT Armed Services Vocational Aptitude Battery (ASVAB) testing program, in which a single pretest item…
Descriptors: Adaptive Testing, Computer Assisted Testing, Item Banks, Maximum Likelihood Statistics