| Effect | Decrease |
| Trial Design | Double blind |
| Trial Length | 1-7 Days |
| Number of Subjects | 39 |
| Sex | Both Genders |
| Age Range | 18-29, 30-44 |
| Body Types | Trained, Average |
Supplementation of modafinil during sleep deprivation was effective in improving cognition and reducing fatigue, although it appeared to cause an 'overconfidence' effect causing participants to overestimate their capacities relative to what they were capable of cognitively.
