Table 1.
Demographics and N-back performance data
| Controls (N=18) | ADHD+BPD (N=18) | Test statistic (p-value) | |||
|---|---|---|---|---|---|
|
| |||||
| Mean | SD | Mean | SD | ||
| Demographics | |||||
| Age | 32.9 | 10.4 | 33.8 | 12.3 | t(35) = .219 (0.828) |
| Caucasian, n (%) | 15 | 83.3 | 17 | 94.4 | χ2(1) = 1.13 (0.603) |
| Left-Handed, n (%) | 1 | 5.6 | 3 | 16.7 | χ2(1) = 1.13 (0.603) |
| Cognitive | |||||
| IQ | 113.3 | 12.4 | 107.3 | 11.1 | t(35) = 1.68 (0.103) |
| WRAT-Reading | 109.2 | 6.9 | 105.1 | 9.7 | t(35) = 1.54 (0.134) |
| WRAT-Arithmetic | 105.1 | 12.2 | 90.8 | 13.5 | t(35) = 3.40 (0.002) |
| Mood State | |||||
| POMS-Tension/Anxiety | 33.2 | 6.6 | 40.7 | 9.0 | t(35) = 2.83 (0.008) |
| POMS-Depression | 37.4 | 2.7 | 44.3 | 9.3 | t(35) = 2.98 (0.007) |
| POMS-Anger/Hostility | 40.7 | 5.1 | 49.2 | 8.7 | t(35) = 3.57 (0.001) |
| N Back Performance Data | |||||
| X Task % Correct | 98.0 | 1.7 | 95.6 | 4.4 | t(35) = 2.13 (0.045) |
| X Task RT | 552.4 | 80.3 | 549.9 | 109.2 | t(35) = 0.08 (0.938) |
| 2 Back % Correct | 87.9 | 7.5 | 81.8 | 10.0 | t(35) = 2.07 (0.047) |
| 2 Back RT | 811.1 | 111.6 | 813.5 | 218.3 | t(35) = 0.04 (0.967) |
POMS: Profile of Mood States (McNair et al., 1992)