Table 3.
Correlations Across the Full Sample
| Variables | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Age | -- | ||||||||||||||||||
| 2. Sex | .110 | -- | |||||||||||||||||
| 3. Story Problems | .030 | .126* | -- | ||||||||||||||||
| 4. Addition 0–12 | .045 | .043 | .362** | -- | |||||||||||||||
| 5. Addition 0–18 | .018 | .029 | 376** | . .760** | -- | ||||||||||||||
| 6. DD Addition | −.011 | −.007 | .277** | .527** | .479** | -- | |||||||||||||
| 7. Subtraction 0–12 | .074 | .129* | .384** | .561** | .531** | .336** | -- | ||||||||||||
| 8. Subtraction 0–18 | .083 | .100 | .343** | .520** | .461** | .327** | .750** | -- | |||||||||||
| 9. DD Subtraction | −.054 | −.058 | .239** | .460** | .420** | .718** | .261** | .305** | -- | ||||||||||
| 10.WASI MR | −.025 | .063 | .278** | .178** | .249** | .076 | .187** | .160** | .104 | -- | |||||||||
| 11. WJ-III CF | −.011 | .020 | .471** | .239** | .266** | .158** | .232** | .227** | .129* | .326** | -- | ||||||||
| 12. WMTB-C LR | −.004 | .012 | 392** | 187** | 147** | .138* | 147** | .140** | .052 | .285** | .309** | -- | |||||||
| 13. WMTB-C CR | .020 | .040 | .282** | .271** | .216** | .274** | .214** | .224** | .229** | .272** | .260** | .391** | -- | ||||||
| 14. WASI Vocabulary | .015 | −.018 | .368** | .084 | .076 | −.007 | −.027 | −.031 | −.059 | .175** | .377** | .321** | .198** | -- | |||||
| 15. WDRB LC | .029 | .089 | .401** | .140* | .140** | .040 | .132* | .131* | −.005 | .183** | .393** | .412** | .206** | .603** | -- | ||||
| 16. WIF-B | −.052 | .005 | .425** | .404** | .369** | .316** | .374** | .347** | .218** | .196** | .298** | .351** | .237** | .249** | .330** | -- | |||
| 17. WIF-N | −.063 | −.018 | .407** | .462** | .426** | .342** | .415** | .395** | .278** | .190** | .271** | .362** | .236** | .224** | .322** | .892** | -- | ||
| 18. ITBS9 | −.066 | .127* | .610** | .390** | .400** | .284** | .381** | .325** | .195** | .459** | .446** | .391** | .330** | .403** | .414** | .430** | .422** | -- | |
| 19. ITBS10 | −.067 | .096 | .539** | .364** | .356** | .246** | .316** | .221** | 174** | .383** | .386** | .259** | .271** | .352** | .365** | .311** | .322** | .561** | -- |
| 20. VSP | −.047 | −.002 | .541** | .430** | .404** | .236** | .364** | .272** | .158** | .397** | .461** | .402** | .347** | .271** | .344** | .448** | .429** | .602** | .512** |
Note. Across correlations, N range 267–340. Age = Age in second grade; DD = Double digit; WASI = Wechsler Abbreviated Scale of Intelligence; MR = Matrix Reasoning; WJ=III = Woodcock-Johnson, Third Edition; CF = Concept Formation; WMTB-C = Working Memory Test Battery for Children; LR = Listening recall; CR = Counting recall; WDRB = Woodcock Diagnostic Reading Battery; LC = Listening comprehension; WIF-B/N = Word identification fluency form B/N; VSP = Vanderbilt Story Problems; ITBS9/10 = Iowa Test of Basic Skills 9/10.
**
p < .01
*
p < .05