Table 4.
Correlations between measures of lexical-semantic knowledge (PPVT-4) and executive control of memory (CVLT-II, Trial 1) and fluency indices for the students with significant learning disabilities.
| Test | PPVT-4 | CVLT-II, Trial 1 | Overall fluency | Cluster size | Embedded cluster ratio | Cluster switch ratio | Slope |
|---|---|---|---|---|---|---|---|
| PPVT-4 | 1.0 | ||||||
| CVLT-II, Trial 1 | .18 | 1.0 | |||||
| Overall fluency | .40** | .45** | 1.0 | ||||
| Cluster size | .35* | .26 | .56** | 1.0 | |||
| Embedded cluster ratio | −.04 | .14 | .07 | .16 | 1.0 | ||
| Cluster switch ratio | .00 | .35* | .31* | .12 | .20 | 1.0 | |
| Slope | −.25 | −.01 | .14 | −.27 | .03 | .24 | 1.0 |
Note. PPVT-4 = Peabody Picture Vocabulary Test–Fourth Edition, CVLT-II = California Verbal Learning Test–Second Edition. n = 50.
*
p < .05.
**
p < .01.