At visit 1 and again at visit 2, participants assigned to the experimental arm will receive a 14-day supply of 500 mg of citicoline, of which they will be instructed to take 500 mg daily. This will be done in a double-blind, randomized fashion.

At visit 1 and again at visit 2, participants assigned to the experimental arm will receive a 14-day supply of 250 mg of citicoline, of which they will be instructed to take 250 mg daily. This will be done in a double-blind, randomized fashion.

At visit 1 and again at visit 2, participants assigned to the placebo group will be given 14-day supplies of placebo to be taken daily throughout the study period. This will be done in a double-blind, randomized fashion.

Participants randomly assigned to the experimental group, who, in addition to the research staff will be blind to such assignment, will be instructed to orally administer 500 mg or 250 mg daily citicoline. These participants will receive a 14-day supply of citicoline at visit 1 and again at visit 2, making for a 28-day administration period.

Using baseline assessment measures gathered at Visit 1, assessments collected at Visits 2 and 3 will be used to determine whether the combined administration of citicoline will improve neurocognitive performance in male adolescents.