Table 1.
Correlations, means, and standard deviations for study variables.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Age | - | |||||||||||
| 2. Sex | −.10** | - | ||||||||||
| 3. Race | −.10** | .02 | - | |||||||||
| 4. SCT | −.00 | .10** | −.01 | - | ||||||||
| 5. ADHD-I | .05** | −.02 | −.02 | .71** | - | |||||||
| 6. ADHD-H/I | .02 | .00 | .04** | .46** | .54** | - | ||||||
| 7. Depression | .05** | .00 | −.04** | .50** | .53** | .31** | - | |||||
| 8. Reward valuation | −.00 | .10** | −.07** | .24** | .18** | .16** | .28** | - | ||||
| 9. Willingness to work | −.00 | −.05** | −.05** | −.09** | −.08** | .12** | −.17** | .03 | - | |||
| 10. Expectancy | −.09** | .22** | 11** | −.07** | −.16** | −.03 | −.24** | .06 | 15** | - | ||
| 11. Initial Response | −.07** | .12** | .06** | −.25** | −.31** | −.12** | −.49** | −.11** | 19** | .56** | - | |
| 12. Sustained Response | −.01 | .03 | .02 | −.08** | -11** | −.01 | −.15** | .03 | .13** | .28** | .28** | - |
| Mean | 19.08 | -- | -- | 1.20 | 1.68 | 1.69 | .54 | 4.40 | 2.80 | 4.93 | 5.10 | 2.58 |
| SD | 1.36 | -- | -- | .59 | .54 | .50 | .61 | 1.02 | .58 | .90 | 1.02 | .62 |
Note. For sex, male = 0, female = 1. For race, 0 = non-White, 1 = White. Age is calculated in years. SCT = sluggish cognitive tempo; ADHD = attention deficit/hyperactivity disorder; I = inattention; H/I = hyperactive/impulsive. Means and SDs are presented from the original data set. Correlations reflect pooled estimates across imputed datafiles.
*
p < .05,
**
p < .01.