Table 5.
WKe-Book Predicting Word Knowledge Calibration Where Students Report They Know They Know the Word and Define it Correctly (Knows Know)
| Final estimation of fixed effects (with robust standard errors) | |||||
|---|---|---|---|---|---|
| Fixed Effect | Coefficient | Standard error | t-ratio | Approx. d.f. | p-value |
| For INTRCPT1, β0 | |||||
| Fitted mean, γ00 | 1.009 | 0.086 | 11.633 | 22 | <0.001 |
| Grade, γ01 | 0.501 | 0.067 | 7.481 | 22 | <0.001 |
| WKe-Book Immediate Treatment, γ02 | 0.006 | 0.125 | 0.050 | 22 | 0.961 |
| For Book club slope, β1 | |||||
| Book Club, γ10 | 0.024 | 0.110 | 0.220 | 571 | 0.826 |
| WKe-Book X Book club, γ11 | 0.339 | 0.157 | 2.154 | 571 | 0.032 |
| Final estimation of variance components | |||||
| Random Effect | Standard Deviation | Variance Component |
d.f. | χ2 | p-value |
|---|---|---|---|---|---|
| INTRCPT1, u0 | 0.19590 | 0.03837 | 22 | 40.87804 | 0.009 |
| level-1, r | 1.03329 | 1.06769 |
Deviance = 1759.309026
Note. WKe-Book Immediate Treatment = 1, delayed treatment control = 0; Book club = 1, no book club control = 0. WKe-Book X Book club = 1 for children in immediate treatment who participated in book club, all others = 0. See also Figure 5.