Table 2. Phenotypic Correlations for all Grades of Reading Comprehension.
| Grade 1 | Grade 2 | Grade 3 | Grade 4 | Grade 5 | Grade 6 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reading Comp. WRRMP | |||||||||||
| Grade 1 | — | ||||||||||
| Grade 2 | 0.60 | (262) | — | ||||||||
| Grade 3 | 0.53 | (240) | 0.74 | (226) | — | ||||||
| Grade 4 | 0.58 | (236) | 0.64 | (202) | 0.79 | (231) | — | ||||
| Grade 5 | 0.49 | (235) | 0.51 | (208) | 0.77 | (218) | 0.82 | (243) | — | ||
| Grade 6 | 0.45 | (136) | 0.62 | (155) | 0.71 | (111) | 0.69 | (117) | 0.76 | (167) | — |
| Reading Comp. ILTS | |||||||||||
| Grade 1 | — | ||||||||||
| Grade 2 | 0.78 | (952) | — | ||||||||
| Grade 4 | 0.65 | (912) | 0.73 | (918) | |||||||
Note. Ns in parentheses are for individuals. All correlations are significant at p <.001