Trial · NCT01834547
Cognitive Hyper-performance - Effects of Stimulating Substances in Chess-players
NCT01834547, Phase 1, Completed, K. Lieb
3 sourcestrials-2026-11-12-0.4.0
Cite this record
ConductScience Library. Cognitive Hyper-performance - Effects of Stimulating Substances in Chess-players. Trials, record NCT01834547. Release trials-2026-11-12-0.4.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT01834547
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- Cognitive Hyper-performance - Effects of Stimulating Substances in Chess-players
- NCT number
- NCT01834547
- Status
- Completed
- Phases
- Phase 1
- Enrollment
- 40 participants, actual
- Lead sponsor
- K. Lieb
- Conditions
- Cognitively Healthy Subjects Influenced by Psychoactive Drugs
- Interventions
- Drugs use: methylphenidate, Drug use: modafinil, caffeine, placebo
- First posted
- 2013-04-18
- Last updated
- 2013-04-18
Source ClinicalTrials.gov
Registered outcomes5
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Chess games (win/ lose/ tie) | two years | |
| Secondary | time period for decision of chess games | results of ches games | |
| Secondary | Cognitive performance measured with standardized neuropsychiatric tests (Tower of Hanoi, Trail-Making test, Stroop-Test, Psycho-Motor-Vigilance test, Wisconsin-Card-Sorting-Test, Balloon Analog Risk Task) | outcome of tests | |
| Secondary | measuring of risk taking behaviour, motivation, mood using standardized questionnaires | outcome of tests | |
| Secondary | adverse events | type of adverse events |
Source ClinicalTrials.gov
Outcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers0
The papers the trial lists on ClinicalTrials.gov.
None in this release.
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests6
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
| Test | Named as | Source |
|---|---|---|
| Balloon Risk | Secondary outcome | ConductCognition |
| Card Sorting Test (Berg) | Secondary outcome | ConductCognition |
| Stroop Color-Word Test | Secondary outcome | ConductCognition |
| Tower of Hanoi | Secondary outcome | ConductCognition |
| Trail Making Test A | Secondary outcome | ConductCognition |
| Trail Making Test B | Secondary outcome | ConductCognition |
Source
- Release
- trials-2026-11-12-0.4.0
- Release manifest SHA-256
- 0f4a8d8c48aee2a7573ae0fa94ecbeab70c1adbe449bbc95c424bc7d3e97b9d4
- Registry capture
- 2026-11-12
- Results copy, AACT
- 2026-03-23
- NIH clinical studies file
- 2026-11-13
Source ClinicalTrials.gov
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNone stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT01834547
GET https://conductscience.org/api/trials/v1/NCT01834547/registered