Table 2.
Zero-order Correlations Among Variables
| Par. Ed. | WASI | RPI | Stoplight | DD | IGT | ToL | WM | VF | DSB | |
|---|---|---|---|---|---|---|---|---|---|---|
| Age | −.07*** | .15*** | .15*** | −.03* | .06*** | −.16*** | .18*** | .29*** | .26*** | .20*** |
| Par. Ed. | - | .20*** | .05** | .004 | .09*** | −.08*** | .04** | .10*** | −.03* | .09*** |
| WASI | - | .10*** | .06*** | .13*** | −.15*** | .21*** | .36*** | .30*** | .36*** | |
| RPI | - | −.05*** | .07*** | −.07*** | .06*** | .15*** | .04* | .06*** | ||
| Stoplight | - | −.03 | .04** | .02 | .09*** | .09*** | .07*** | |||
| DD | - | −.12*** | .09*** | −.01 | .09*** | .05** | ||||
| IGT | - | −.14*** | −.13*** | −.10*** | −.10*** | |||||
| ToL | - | .16*** | .08*** | .23*** | ||||||
| WM | - | .26*** | .37*** | |||||||
| VF | - | .27*** | ||||||||
Note. Par. Ed. = Parental education; WASI = WASI t-score; RPI = Resistance to peer influence; DD = Delay discounting, average indifference point for longest delays; IGT = Iowa Gambling Task, corresponding to the proportion decrease in plays on disadvantageous decks; ToL = Tower of London, latency to first move; WM = Working memory; VF = Verbal fluency; DSB = Digit Span backward.
*
p < .05
**
p < .01
***
p < .001.