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Correlations among estimates from three approaches: IRT, TX, and a combination of TX and IRT (21-item).
| IRT | TX | TX and IRT (21-item) | |
| IRT | 1.00 | ||
| TX | 0.56 | 1.00 | |
| TX and IRT (21-item) | 0.99 | 0.62 | 1.00 |
TX indicates the textual assessments. Correlation is significant at the 0.01 level (2-tailed).
