Abstract
An examinee-level (or conditional) reliability is proposed for use in both classical test theory (CTT) and item response theory (IRT). The well-known group-level reliability is shown to be the average of conditional reliabilities of examinees in a group or a population. This relationship is similar to the known relationship between the square of the conditional standard error of measurement (SEM) and the square of the group-level SEM. The proposed conditional reliability is illustrated with an empirical data set in the CTT and IRT frameworks.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 169-180 |
| Number of pages | 12 |
| Journal | Applied Psychological Measurement |
| Volume | 31 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 2007 |
| Externally published | Yes |
Keywords
- Classical test theory
- Conditional reliability
- Conditional standard error of measurement
- Item response theory
ASJC Scopus subject areas
- Social Sciences (miscellaneous)
- Psychology (miscellaneous)
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