Table 3.
Neurocognitive Performance by Racial Group
| Black (n=91) M (SD) |
White (n=79) M (SD) |
pa | Cohen’s d | % Impaired
|
||
|---|---|---|---|---|---|---|
| Black | White | |||||
| Fluid Composite T | 37.63 (11.67) | 42.59 (11.54) | <.01 | .43 | 64% | 39% |
| Dimensional Change Card Sort Task T | 40.34 (9.25) | 43.60 (10.13) | .03 | .34 | 52% | 32% |
| Picture Sequence Memory Task T | 41.25 (10.80) | 44.72 (12.21) | .05 | .30 | 51% | 38% |
| List Sorting Working Memory Task T | 41.90 (9.93) | 45.66 (10.10) | .02 | .38 | 48% | 30% |
| Flanker Inhibitory Control and Attention Task T | 39.87 (10.00) | 44.10 (10.22) | <.01 | .42 | 51% | 38% |
| Pattern Comparison Processing Speed Test T | 46.55 (11.99) | 47.86 (11.48) | .47 | .11 | 29% | 28% |
Note.
a
Results from independent sample t-tests. Impairment = T-score of 40 or below (1 SD below the mean)