Table 1:
Descriptive Statistics
| Measure | Mean | SD | n | Skewness | Kurtosis |
|---|---|---|---|---|---|
| BRIEF-SR GEC | 124.05 | 26.85 | 278 | 0.80 | 0.64 |
| BRIEF-SR Inhibit | 17.13 | 4.29 | 278 | 1.36 | 2.58 |
| BRIEF-SR Shift | 15.74 | 3.80 | 278 | 0.78 | 0.76 |
| BRIEF-SR WM | 19.15 | 4.91 | 278 | 0.48 | −0.24 |
| EATQ-R EC | 57.10 | 9.89 | 278 | −0.14 | −0.25 |
| EATQ-R Inhibition | 20.03 | 3.11 | 278 | −0.57 | 0.57 |
| EATQ-R Attentional Control | 21.22 | 3.99 | 278 | −0.17 | −0.30 |
| EATQ-R Activation Control | 15.85 | 4.65 | 278 | −0.02 | −0.53 |
| Stroop blocked interference (ms) | 154.22 | 86.16 | 274 | −0.59 | 0.38 |
| Antisaccade proportion correct | .68 | .16 | 278 | −0.10 | −0.29 |
| Stop Signal SSRT (ms) | 272.35 | 136.63 | 267 | −0.44 | −0.51 |
| Category switch cost (ms) | 272.63 | 159.53 | 255 | 0.05 | 0.38 |
| Color-Shape switch cost (ms) | 216.17 | 159.55 | 274 | −0.34 | 0.00 |
| Number-Letter switch cost (ms) | 388.13 | 211.55 | 276 | −0.58 | 0.57 |
| Keep track proportion correct | .70 | .11 | 278 | −0.08 | 0.04 |
| Letter Memory proportion correct | .86 | .13 | 276 | −0.63 | 0.69 |
| Spatial 2-back proportion correct | .79 | .10 | 277 | 0.15 | −0.16 |
Note. Variable means and SD given in raw metric for ease of interpretation. Skewness and kurtosis are reported for transformed variables; to reduce skewness, accuracy measures (antisaccade, keep track, letter memory, spatial 2-back) were arcsine transformed, switch costs were square-root transformed, and stop signal SSRT was natural log transformed. Note that BRIEF-SR and EATQ-R manifest scale and subscale scores were not used in the CFA analyses (all indicators were individual items), and are reported here only for comparison with other samples. BRIEF-SR = Behavior Rating Inventory of Executive Function Self-Report; GEC = Global Executive Composite (total BRIEF-SR score); WM = working memory; EATQ-R = Early Adolescent Temperament Questionnaire Revised; EC = effortful control (EATQ-R total score).