Table 2.
Zero-order correlations among reading and demographic variables
| KTEA-3 RC | KTEA-3 SRF | KTEA-3 LWR | KTEA-3 NWD | KTEA-3 WRF | KTEA-3 LC | WISC-V Sim | WISC-V Voc | Age | Sex (F/M) | SES | ADHD (N/Y) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||
| KTEA-3 Reading Comprehension | -- | |||||||||||
| KTEA-3 Silent Reading Fluency | .58** | -- | ||||||||||
| KTEA-3 Letter & Word Recognition | .73** | .63** | -- | |||||||||
| KTEA-3 Nonsense Word Decoding | .63** | .57** | .81** | -- | ||||||||
| KTEA-3 Word Reading Fluency | .66** | .65** | .77** | .64** | -- | |||||||
| KTEA-3 Listening Comprehension | .64** | .40** | .54** | .43** | .42** | -- | ||||||
| WISC-V Similarities | .63** | .44** | .53** | .44** | .40** | .59** | -- | |||||
| WISC-V Vocabulary | .64** | .39** | .53** | .39** | .44** | .64** | .65** | -- | ||||
| Age | .11 | .14* | .11 | .18 | .28** | −.12 | .04 | −.02 | -- | |||
| Sex (Female/Male) | −.09 | −.17** | .01 | −.03 | −.05 | .04 | −.06 | −.05 | .07 | -- | ||
| Socioeconomic Status | .32** | .26** | .28** | .17 | .27** | .28** | .27** | .28** | .03 | −.01 | -- | |
| ADHD Status (No/Yes) | −.11 | −.11 | −.13* | −.37** | −.22* | −.02 | −.08 | −.07 | −.16* | .11 | <.001 | -- |
Note KTEA-3 = Kaufman Test of Educational Achievement – 3rd Edition (standard scores). WISC-V = Wechsler Intelligence Scale for Children – Fifth Edition (scaled scores). RC = reading comprehension; SRF = silent reading fluency; LWR = letter & word recognition; NWD = nonsense word decoding; WRF = word reading fluency; LC = listening comprehension; Sim = similarities; Voc = vocabulary; Sex (Female = 0, Male = 1); SES = Hollingshead socioeconomic status; ADHD (No = 0, Yes = 1). Correlation matrices for the ADHD and Non-ADHD groups separately can be found in Supplementary (Online) Tables X and Y.
*
p≤.05,
**
p≤.01