Table 3.
Means of discrimination performance by condition over 24 h expressed in d′.a
| TTTV | UTTV | TTUV | UTUV | Mean | |
|---|---|---|---|---|---|
| Morning group | |||||
| Pretest | 0.02(0.43) | 0.25(0.40) | 0.11(0.46) | 0.29(0.46) | 0.17(0.22) |
| Posttest1 | 0.36(0.42) | 0.75(1.64) | 0.11(0.27) | 0.66(0.61) | 0.46(0.41) |
| Posttest2 | 0.08(0.45) | 0.41(0.58) | 0.19(0.99) | 0.55(0.40) | 0.31(0.26) |
| Posttest3 | 0.38(0.55) | 0.11(0.52) | 0.28(0.41) | 0.49(0.52) | 0.31(0.30) |
| Evening group | |||||
| Pretest | 0.21(0.28) | 0.07(0.54) | 0.13(0.54) | 0.40(0.29) | 0.20(0.21) |
| Posttest1 | 0.26(0.41) | 0.20(0.57) | 0.32(0.51) | 0.33(0.45) | 0.28(0.19) |
| Posttest2 | 0.26(0.38) | 0.32(0.29) | 0.35(0.32) | 0.28(0.73) | 0.30(0.30) |
| Posttest3 | 0.25(0.59) | 0.06(0.44) | 0.09(0.47) | 0.32(0.68) | 0.18(0.28) |
a
Means and standard deviations in the four trial conditions.