Table 5.
Genetic (above Diagonal) and Nonshared Environment (below Diagonal) Correlations among Grade 2 Literacy Measures and Vocabulary (95% confidence intervals in parentheses)
| Variable | TOWRE |
Woodcock Passage Comprehension |
Spelling | Vocabulary |
|---|---|---|---|---|
| TOWRE | - | .88 (.83 - .94) | .83 (.78 - .89) | .36 (.20 - .52) |
| Woodcock Passage | .42 (.33 - .51) | - | .84 (.78 - .90) | .46 (.29 - .63) |
| Comprehension | ||||
| Spelling | .34 (.24 - .43) | .31 (.21 - .41) | - | .62 (.45 - .79) |
| Vocabulary | .10 (.00 - .21) | .07 (.00 - .18) | .14 (.03 - .24) | - |
Note: TOWRE = Test of Word Reading Efficiency