Phase I Study About Effects of Caffeine, Methylphenidate, Modafinil and Placebo on Cognitive Performance of Chess Players. (CHESS)

NCT01834547 Phase 1 COMPLETED

Effects of caffeine, methylphenidate, modafinil and placebo on cognitive performance of chess players in chess games and neuropsychiatric standardized tests. We hypothesize that substances will change cognitive performance in chess players leading to changed results in chess games and neuropsychiatric tests.

Details

Lead sponsor	K. Lieb
Phase	Phase 1
Status	COMPLETED
Enrolment	40
Start date	2011-05
Completion	2013-04

Conditions

• Cognitively Healthy Subjects Influenced by Psychoactive Drugs

Interventions

• Drugs use: methylphenidate
• Drug use: modafinil
• caffeine
• placebo

Primary outcomes

• Chess games (win/ lose/ tie) — two years

Countries

Germany