| Effect | Increase |
| Trial Design | Double blind |
| Trial Length | 1-2 Weeks |
| Number of Subjects | 18 |
| Sex | Male |
| Age Range | 18-29 |
| Body Types | Average |
400mg of phosphatidylserine daily (two protein bars containing 200mg each; placebo given PS-free protein bars) over 2 weeks in a double-blind crossover design was able to increase the speed of calculations (20%) and improve accuracy (13% more right answers, 39% less wrong) despite not influencing mood state or fatigue.
