Table 4.
Comparison of mean (and standard deviation) NASA results for an average day at work and for the simulation task
| Average day at work | During simulation task | Statistics | |
|---|---|---|---|
| Raw rating | |||
| Mental demand | 67.0 (20.8) | 77.5 (16.9) | t(9) = −1.64, p = 0.13 |
| Physical demand | 46.5 (24.8) | 14.5 (20.2) | t(9) = 2.82, p = 0.02 |
| Temporal demand | 74.0 (14.5) | 65.0 (20.5) | t(9) = 1.33, p = 0.21 |
| Performance | 32.0 (22.6) | 51.5 (17.6) | t(9) = −1.84, p = 0.09 |
| Effort | 61.0 (23.5) | 59.0 (18.9) | t(9) = 0.22, p = 0.83 |
| Frustration | 70.0 (21.1) | 63.0 (24.7) | t(9) = 0.95, p = 0.36 |
| Adjusted rating | |||
| Mental demand | 199.0 (112.0) | 235.5 (67.3) | t(9) = −0.85, p = 0.41 |
| Physical demand | 40.0 (100.2) | 7.0 (22.1) | t(9) = 0.98, p = 0.34 |
| Temporal demand | 248.5 (98.6) | 232.0 (131.7) | t(9) = 0.29, p = 0.77 |
| Performance | 95.0 (74.9) | 157.5 (72.3) | t(9) = −1.76, p = 0.11 |
| Effort | 137.0 (84.3) | 100.5 (36.3) | t(9) = 1.18, p = 0.26 |
| Frustration | 179.5 (97.2) | 204.0 (153.2) | t(9) = −0.40, p = 0.69 |
| Total weighted rating | 59.3 (12.1) | 62.4 (13.1) | t(9) = −0.66, p = 0.52 |
All analyses are paired t tests; significant differences are italics; trend differences are in italics