Table 1.
Descriptive statistics.
| Variable | ||||
|---|---|---|---|---|
| Condition | Gender (M:F) | Age (years) | Sleep (h) | Tired (1–10) |
| Control | 20:18 | 34.1 ± 10.2 | 7.21 ± 1.04 | 5.41 ± 3.26 |
| Fish | 20:12 | 36.4 ± 11.5 | 7.36 ±1.46 | 6.00 ± 2.90 |
| Amphibians | 21:17 | 37.0 ± 10.7 | 6.89 ± 1.64 | 5.18 ± 3.02 |
| Reptiles | 19:15 | 33.7 ± 9.1 | 7.24 ± 1.69 | 5.74 ± 3.11 |
| Birds | 20:14 | 34.1 ± 10.4 | 7.18 ± 1.51 | 7.21 ± 2.74 |
| Mammals | 19:18 | 33.2 ± 10.1 | 6.89 ±1.02 | 5.62 ± 3.23 |
| Apes | 25:19 | 37.7 ± 11.2 | 7.14 ± 1.29 | 5.52 ± 2.55 |
| Pets | 20:19 | 36.8 ± 11.5 | 7.06 ± 1.26 | 6.38 ± 2.98 |
| Combined | 164:132 | 35.5 ± 10.7 | 7.11 ± 1.37 | 5.83 ± 3.00 |
Final sample N = 296. Combined measures represent the total ratio or overall M ± SD. Note: F = female; M = male.