Descriptor
| Construct Validity | 1 |
| Content Validity | 1 |
| Difficulty Level | 1 |
| Item Analysis | 1 |
| Language Tests | 1 |
| Latent Trait Theory | 1 |
| Psychometrics | 1 |
| Test Items | 1 |
| Test Theory | 1 |
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| Language Testing | 1 |
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| Henning, Grant | 1 |
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Peer reviewedHenning, Grant – Language Testing, 1988
Violations of item unidimensionality on language tests produced distorted estimates of person ability, and violations of person unidimensionality produced distorted estimates of item difficulty. The Bejar Method was sensitive to such distortions. (Author)
Descriptors: Construct Validity, Content Validity, Difficulty Level, Item Analysis
