Descriptor
| Computer Software | 1 |
| Correlation | 1 |
| Estimation (Mathematics) | 1 |
| Latent Trait Theory | 1 |
| Mathematical Models | 1 |
| Predictive Measurement | 1 |
| Statistical Studies | 1 |
| Test Construction | 1 |
| Test Items | 1 |
| Test Theory | 1 |
Source
Author
| Ackerman, Terry A. | 1 |
Publication Type
| Reports - Research | 1 |
| Speeches/Meeting Papers | 1 |
Education Level
Audience
| Researchers | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
| ACT Assessment | 1 |
What Works Clearinghouse Rating
Download full textAckerman, Terry A. – 1987
One of the important underlying assumptions of all item response theory (IRT) models is that of local independence. This assumption requires that the response to an item on a test not be influenced by the response to any other items. This assumption is often taken for granted, with little or no scrutiny of the response process required to answer…
Descriptors: Computer Software, Correlation, Estimation (Mathematics), Latent Trait Theory
