Table 2.
Means and standard deviation (SD) of the outcome scores of the cognitive test battery and overview of all test values comparing the modafinil to the placebo condition
Placebo | Modafinil | Modafinil vs Placebo |
|||||
---|---|---|---|---|---|---|---|
Test | Mean | SD | Mean | SD | F | p | |
Memory of visual material | Early recall—correct | 30.19 | 16.05 | 31.38 | 16.62 | F(1,15) = 0.35 | .564 |
Logical reasoning | BOMAT—% correct | 71.20 | 20.19 | 65.52 | 20.80 | F(1,15) = 0.85 | .372 |
Speed of processing | ZVT—sec | 56.59 | 10.71 | 55.88 | 10.75 | F(1,15) = 0.22 | .647 |
Working memory | BackSpan | 7.75 | 1.13 | 7.63 | 1.67 | F(1,15) = 0.06 | .814 |
Creativity |
Alternate uses test Mean nr. of uses |
11.10 | 4.61 | 11.31 | 4.54 | F(1,15) = 0.06 | .810 |
Memory of audio material |
Early recall—correct | 38.56 | 9.95 | 39.50 | 8.11 | F(1,15) = .24 | .632 |
False memory | Early recall—lures | 1.62 | 1.36 | 0.56 | 0.73 | F(1,15) = 10.1 | .006 |
Implicit memory | d´ | 2.17 | 0.53 | 2.25 | 0.84 | F(1,15) = 0.12 | .735 |
Sustained attention | PVT; reaction time in ms | 387 | 34.9 | 375 | 33.1 | F(1,15) = 2.82 | .114 |
Motivation | VAS—mean | 6.51 | 1.54 | 6.58 | 1.3 | F(1,15) = 0.05 | .821 |
Subjective measures | Fatigue | 1.2 | 0.7 | 0.8 | 0.7 | F(1,15) = 6.36 | .023 |
Serenity | 2.7 | 0.8 | 2.6 | 0.7 | F(1,15) = 0.03 | .857 | |
Late recall (24 h) | Visual material—correct | 18.63 | 17.36 | 21.06 | 17.44 | F(1,15) = 1.16 | .299 |
Audio material—correct | 27.5 | 11.5 | 30.5 | 8.36 | F(1,15) = 2.39 | .143 | |
Audio material—lures | 1.25 | 1.18 | 0.88 | 1.09 | F(1,15) = 1.9 | .188 |
Marked with * are p values that were significant after using Benjamini-Hochberg correction for multiple comparisons, with a false discovery rate of 5%