Descriptor
| Computer Simulation | 2 |
| Estimation (Mathematics) | 2 |
| Factor Structure | 2 |
| Mathematical Models | 2 |
| Multidimensional Scaling | 2 |
| Test Items | 2 |
| Computer Graphics | 1 |
| Equations (Mathematics) | 1 |
| Factor Analysis | 1 |
| Item Analysis | 1 |
| Item Response Theory | 1 |
| More ▼ | |
Source
Publication Type
| Speeches/Meeting Papers | 2 |
| Reports - Evaluative | 1 |
| Reports - Research | 1 |
Education Level
Audience
| Researchers | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Download full textDoody, Evelyn N. – 1985
The effects of varying degrees of correlation between abilities and of various correlation configurations between item parameters on ability and item parameter estimation using the three parameter logistic model were examined. Ten two-trait configurations and one unidimensional test configuration for 30 item tests were simulated. Each…
Descriptors: Computer Simulation, Estimation (Mathematics), Factor Structure, Item Analysis
Muraki, Eiji; Carlson, James E. – 1993
A multidimensional item response theory (IRT) model for polytomously scored items, based on the graded response model and using the normal ogive, is developed; and an EM algorithm that may be used to estimate the parameters of the model is also discussed. The model is illustrated through a simulation study in which the polytomous item responses of…
Descriptors: Computer Graphics, Computer Simulation, Equations (Mathematics), Estimation (Mathematics)
