Table 2.
Descriptive statistics for Executive Function and Verbal Memory measures for the entire sample.
| Task and dependent measure | N | M | SD | Range
 | 
Skewness | Kurtosis | |
|---|---|---|---|---|---|---|---|
| Potential | Actual | ||||||
| Cambridge Neuropsychological Test Battery Spatial Working Memory errors | 291 | 39.05 | 20.98 | 0- | 1-97 | 0.02 | −0.99 | 
| Cambridge Neuropsychological Test Battery Set Shift errors | 331 | 24.45 | 14.78 | 0- | 0-73 | 0.37 | −0.52 | 
| Cambridge Neuropsychological Test Battery Spatial Span | 331 | 5.53 | 1.63 | 0-9 | 0-9 | 0.25 | −0.24 | 
| Wechsler Intelligence Scale for Children-III Digit Span | 333 | 13.35 | 3.61 | 0-30 | 3-26 | 0.48 | −0.03 | 
| California Verbal Learning Task long-delay cued recall | 328 | 10.74 | 2.97 | 0-15 | 0-15 | −0.84 | 0.74 | 
| California Verbal Learning Task long-delay free recall | 328 | 10.17 | 3.13 | 0-15 | 0-15 | −0.84 | 0.57 | 
| California Verbal Learning Task short-delay cued recall | 328 | 10.54 | 2.84 | 0-15 | 0-15 | −0.77 | 0.67 | 
| California Verbal Learning Task short-delay free recall | 328 | 9.88 | 3.14 | 0-15 | 0-15 | −0.64 | −0.003 |