Table 4.
Factor loadings, varimax rotation (normalized)
| Task | Metric | Visual search | Accurate response speed | Stroop accuracy | KSS | Stroop speed | Mathematical addition | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| V1 | V2 | V1 | V2 | V1 | V2 | V1 | V2 | V1 | V2 | V1 | V2 | ||
| Stroop | Congruent MEDRTC | 0.22 | 0.22 | 0.02 | −0.08 | 0.10 | 0.05 | 0.00 | 0.01 | 0.94 | 0.93 | 0.04 | 0.17 |
| Stroop | Neutral MEDRTC | 0.19 | 0.16 | 0.09 | −0.01 | 0.12 | 0.09 | 0.03 | 0.09 | 0.93 | 0.95 | 0.16 | 0.14 |
| Stroop | Incongruent MEDRTC | 0.21 | 0.21 | −0.03 | 0.08 | 0.17 | 0.10 | 0.09 | 0.01 | 0.91 | 0.92 | 0.14 | 0.18 |
| Stroop | Congruent Correct (%) | 0.04 | 0.02 | −0.36 | 0.40 | 0.84 | 0.80 | 0.22 | 0.21 | 0.06 | 0.15 | 0.15 | −0.04 |
| Stroop | Neutral Correct (%) | 0.00 | 0.10 | −0.13 | 0.41 | 0.89 | 0.83 | 0.18 | 0.22 | 0.19 | 0.16 | 0.04 | −0.05 |
| Stroop | Incongruent Correct (%) | 0.16 | 0.11 | −0.28 | 0.40 | 0.85 | 0.81 | −0.03 | 0.09 | 0.29 | 0.29 | −0.02 | −0.13 |
| PVT | False Starts | 0.00 | −0.16 | 0.29 | −0.45 | −0.10 | −0.17 | −0.43 | −0.48 | −0.30 | −0.29 | 0.69 | 0.44 |
| PVT | Fastest RT | 0.15 | 0.12 | 0.80 | −0.75 | −0.22 | −0.41 | 0.12 | 0.05 | 0.34 | 0.24 | 0.01 | −0.01 |
| PVT | 1 / median RT | −0.12 | −0.17 | −0.95 | 0.90 | 0.13 | 0.29 | 0.04 | −0.02 | −0.13 | −0.10 | −0.04 | 0.01 |
| PVT | 1 / mean RT | −0.13 | −0.27 | −0.95 | 0.92 | 0.13 | 0.22 | 0.22 | 0.12 | −0.04 | 0.03 | 0.06 | 0.05 |
| PVT | log STD RT | 0.16 | 0.27 | 0.84 | −0.86 | −0.11 | −0.18 | −0.42 | −0.28 | −0.15 | −0.13 | −0.08 | −0.01 |
| PVT | 1 / Slowest RT | −0.18 | −0.26 | −0.87 | 0.91 | 0.07 | 0.07 | 0.36 | 0.19 | 0.18 | 0.10 | 0.08 | 0.05 |
| PVT | Lapses | 0.14 | 0.09 | 0.94 | −0.96 | −0.06 | −0.15 | −0.20 | −0.10 | −0.07 | 0.03 | 0.10 | 0.03 |
| CONJ Visual Search | MEDRTC | 0.95 | 0.93 | 0.15 | −0.23 | 0.11 | 0.12 | −0.05 | −0.06 | 0.19 | 0.19 | 0.14 | 0.14 |
| CONJ Visual Search | CT | −0.71 | −0.59 | −0.39 | 0.63 | 0.46 | 0.35 | 0.14 | 0.15 | −0.22 | −0.15 | −0.05 | 0.04 |
| CONJ Visual Search | MEDRTC Target Present | 0.92 | 0.88 | 0.11 | −0.25 | 0.09 | 0.10 | −0.09 | −0.12 | 0.25 | 0.28 | 0.17 | 0.21 |
| CONJ Visual Search | MEDRTC Target Absent | 0.94 | 0.92 | 0.18 | −0.26 | 0.18 | 0.17 | −0.03 | 0.00 | 0.15 | 0.18 | 0.07 | 0.13 |
| CONJ Visual Search | Missed Targets | −0.03 | −0.12 | −0.08 | −0.07 | −0.87 | −0.76 | 0.06 | 0.08 | 0.00 | 0.11 | −0.05 | −0.28 |
| VAS | Alert | −0.42 | −0.40 | −0.38 | 0.24 | 0.23 | 0.09 | 0.48 | 0.71 | −0.07 | −0.22 | 0.08 | 0.12 |
| KSS | KSS | 0.20 | 0.03 | 0.13 | 0.07 | −0.20 | −0.31 | −0.81 | −0.82 | −0.18 | −0.39 | −0.03 | −0.08 |
| PANAS | Positive Affect Score | 0.05 | 0.01 | −0.28 | 0.45 | −0.09 | −0.29 | 0.85 | 0.60 | −0.11 | −0.24 | 0.05 | 0.13 |
| MWT | SOL | −0.01 | −0.02 | −0.55 | 0.52 | 0.10 | 0.20 | 0.59 | 0.50 | 0.15 | 0.18 | −0.15 | −0.25 |
| ADD | Attempted | −0.26 | −0.20 | 0.10 | −0.04 | −0.18 | −0.07 | −0.15 | −0.07 | −0.41 | −0.27 | −0.81 | −0.92 |
| ADD | Correct (number) | −0.25 | −0.19 | 0.12 | −0.06 | −0.16 | −0.04 | −0.15 | −0.06 | −0.43 | −0.28 | −0.81 | −0.92 |
| Eigenvalue | 1.94 | 2.20 | 8.23 | 9.02 | 2.48 | 1.29 | 1.33 | 1.44 | 5.98 | 5.64 | 1.56 | 1.94 | |
| % Total variance | 8.07 | 9.17 | 34.27 | 37.57 | 10.34 | 5.38 | 5.53 | 6.00 | 24.91 | 23.51 | 6.50 | 8.08 |
Bold indicates values with loading greater than 0.65. log STD, log standard deviation; V1, visit 1; V2, visit 2.