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  1. Home
  2. /Data
  3. /Clinical trials
  4. /Conditions
  5. /ADHD
  6. /Go/No-Go Task

Clinical trials data

Go/No-Go Task in ADHD trials: 65 registered studies

Every registered ADHD study on ClinicalTrials.gov that names the Go/No-Go Task in an outcome measure: how often it is a primary outcome, the tests named with it, how large the studies are and when they measure it.

Registered ADHD studies name it in an outcome measure
65
Name it in a primary outcome, 49%
32 of 65
Of the condition's 357 studies name it, against 4% of all registered studies
18%
Other conditions
Median participants per study
72
By phase
Try the Go/No-Go TaskTry the Go/No-Go Game

Tests named in the same studies

The library tests that ADHD studies naming the Go/No-Go Task name most often beside it.
  1. 1

    Continuous Performance Test16 studies, 5 as a primary outcome

  2. 2

    Stop-Signal Task11 studies, 6 as a primary outcome

  3. 3

    Digit Span Test9 studies, 2 as a primary outcome

  4. 4

    AX Continuous Performance Test7 studies, 0 as a primary outcome

  5. 5

    Eriksen Flanker Task6 studies, 3 as a primary outcome

  6. 6

    Stroop Color-Word Test5 studies, 1 as a primary outcome

  7. 7

    Delay Discounting4 studies, 1 as a primary outcome

  8. 8

    Attention Network Test3 studies, 2 as a primary outcome

  9. 9

    N-Back Task3 studies, 2 as a primary outcome

  10. 10

    Affective Go/No-Go3 studies, 1 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

Studies by start year

Each study counted once. 2026 is partly planned starts.
02000: 0 studies, 0 with a test as a primary outcome20002001: 0 studies, 0 with a test as a primary outcome2002: 0 studies, 0 with a test as a primary outcome2003: 0 studies, 0 with a test as a primary outcome2004: 0 studies, 0 with a test as a primary outcome2005: 0 studies, 0 with a test as a primary outcome20052006: 1 studies, 0 with a test as a primary outcome2007: 0 studies, 0 with a test as a primary outcome2008: 0 studies, 0 with a test as a primary outcome2009: 2 studies, 2 with a test as a primary outcome2010: 1 studies, 0 with a test as a primary outcome20102011: 3 studies, 2 with a test as a primary outcome2012: 4 studies, 1 with a test as a primary outcome2013: 4 studies, 1 with a test as a primary outcome2014: 6 studies, 1 with a test as a primary outcome2015: 6 studies, 5 with a test as a primary outcome20152016: 2 studies, 1 with a test as a primary outcome2017: 5 studies, 3 with a test as a primary outcome2018: 4 studies, 2 with a test as a primary outcome2019: 2 studies, 1 with a test as a primary outcome2020: 3 studies, 2 with a test as a primary outcome20202021: 2 studies, 1 with a test as a primary outcome2022: 7 studies, 3 with a test as a primary outcome2023: 2 studies, 2 with a test as a primary outcome2024: 2 studies, 1 with a test as a primary outcome2025: 4 studies, 3 with a test as a primary outcome20252026: 4 studies, 1 with a test as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

Show as a table
Registered studies by start year
Start yearStudiesA test as a primary outcome
200000
200100
200200
200300
200400
200500
200610
200700
200800
200922
201010
201132
201241
201341
201461
201565
201621
201753
201842
201921
202032
202121
202273
202322
202421
202543
202641

Phases and study sizes

By phase

  • Early phase 11 studies, 1 as a primary outcome
  • Phase 13 studies, 1 as a primary outcome
  • Phase 1/22 studies, 0 as a primary outcome
  • Phase 22 studies, 1 as a primary outcome
  • Phase 32 studies, 1 as a primary outcome
  • Phase 49 studies, 6 as a primary outcome
  • Not applicable38 studies, 16 as a primary outcome
  • Observational8 studies, 6 as a primary outcome

Participants per study

102050100
  • Not applicable70 median, 30 to 96
Participants per study. The bar spans the middle half of the studies in each phase, the mark is the median, and the axis is logarithmic. Phases with fewer than 10 studies that give a size are left out.
Show as a table
Participants per ADHD study that names the Go/No-Go Task, by phase
PhaseStudies with a sizeMedianMiddle half
Not applicable387030 to 96

When ADHD trials measure it

Half of the primary outcomes that name the Go/No-Go Task are measured within 8 weeks of the start, and the middle half from 6 days to 14 weeks. 28 primary outcomes give a duration.

Latest time point of each outcome

  • Within a day9 outcomes, 6 as a primary outcome
  • Up to 4 weeks14 outcomes, 5 as a primary outcome
  • 1 to 3 months21 outcomes, 10 as a primary outcome
  • 3 to 6 months6 outcomes, 3 as a primary outcome
  • 6 to 12 months5 outcomes, 2 as a primary outcome
  • 1 to 2 years2 outcomes, 1 as a primary outcome
  • Over 2 years1 outcomes, 1 as a primary outcome
  • No duration given7 outcomes, 4 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

58 of the 65 outcome measures give a duration. A single visit counts as within a day.

Status, results, interventions and countries

Status

  • Recruiting7 studies, 6 as a primary outcome
  • Not yet recruiting4 studies, 0 as a primary outcome
  • Active, not recruiting2 studies, 1 as a primary outcome
  • Completed41 studies, 19 as a primary outcome
  • Stopped early1 studies, 1 as a primary outcome
  • Status unknown10 studies, 5 as a primary outcome

What they test

  • Behavioral22 studies, 8 as a primary outcome
  • Drug15 studies, 10 as a primary outcome
  • Device14 studies, 6 as a primary outcome
  • Dietary supplement4 studies, 2 as a primary outcome
  • Procedure1 studies, 1 as a primary outcome
  • Diagnostic test1 studies, 1 as a primary outcome
  • Combination product1 studies, 1 as a primary outcome
  • Other15 studies, 7 as a primary outcome
  • None given3 studies, 2 as a primary outcome

Intervention types as registered. A study can list several; observational studies often list none.

Where their sites are

  • United States34 studies, 18 as a primary outcome
  • Brazil5 studies, 1 as a primary outcome
  • United Kingdom4 studies, 1 as a primary outcome
  • China3 studies, 1 as a primary outcome
  • Belgium2 studies, 2 as a primary outcome
  • Germany2 studies, 2 as a primary outcome
  • Israel2 studies, 1 as a primary outcome
  • Sweden2 studies, 1 as a primary outcome
  • Canada1 studies, 0 as a primary outcome
  • Denmark1 studies, 1 as a primary outcome
  • France1 studies, 0 as a primary outcome
  • Greece1 studies, 1 as a primary outcome

19 countries in all. A study with sites in several counts in each; 0 list no site.

Reported results

Completed studies with results posted on ClinicalTrials.gov, a results paper the registry links to the study, or both.

Completed ADHD studies that name the Go/No-Go Task: 22 of 41, 54%

Every completed study with a cognitive outcome: 3,626 of 7,953, 46%

Completed ADHD studies that name the Go/No-Go Task and every completed study, by how they reported results
ResultsCompleted ADHD studies that name the Go/No-Go TaskEvery completed study
Results on ClinicalTrials.gov and a paper5, 12%776, 10%
Results on ClinicalTrials.gov only7, 17%1,139, 14%
A results paper only10, 24%1,711, 22%
Neither19, 46%4,327, 54%

The 65 studies

Filter by phase, sponsor, status, country, intervention, outcome list, size and start year. Each study links to its record on ClinicalTrials.gov.
ConditionADHD
TestThe Go/No-Go Task

65 studies match. 32 name the Go/No-Go Task in a primary outcome. Median size 72 participants. Median time to the primary outcome: 8 weeks.

Loading 65 studies; the filters turn on when they arrive.

By start year
024682000: 0 studies, 0 naming the Go/No-Go Task in a primary outcome20002001: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2002: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2003: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2004: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2005: 0 studies, 0 naming the Go/No-Go Task in a primary outcome20052006: 1 studies, 0 naming the Go/No-Go Task in a primary outcome2007: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2008: 0 studies, 0 naming the Go/No-Go Task in a primary outcome2009: 2 studies, 2 naming the Go/No-Go Task in a primary outcome2010: 1 studies, 0 naming the Go/No-Go Task in a primary outcome20102011: 3 studies, 2 naming the Go/No-Go Task in a primary outcome2012: 4 studies, 1 naming the Go/No-Go Task in a primary outcome2013: 4 studies, 1 naming the Go/No-Go Task in a primary outcome2014: 6 studies, 1 naming the Go/No-Go Task in a primary outcome2015: 6 studies, 5 naming the Go/No-Go Task in a primary outcome20152016: 2 studies, 1 naming the Go/No-Go Task in a primary outcome2017: 5 studies, 3 naming the Go/No-Go Task in a primary outcome2018: 4 studies, 2 naming the Go/No-Go Task in a primary outcome2019: 2 studies, 1 naming the Go/No-Go Task in a primary outcome2020: 3 studies, 2 naming the Go/No-Go Task in a primary outcome20202021: 2 studies, 1 naming the Go/No-Go Task in a primary outcome2022: 7 studies, 3 naming the Go/No-Go Task in a primary outcome2023: 2 studies, 2 naming the Go/No-Go Task in a primary outcome2024: 2 studies, 1 naming the Go/No-Go Task in a primary outcome2025: 4 studies, 3 naming the Go/No-Go Task in a primary outcome20252026: 4 studies, 1 naming the Go/No-Go Task in a primary outcome

2026 is partly planned starts. Not shown: 1 planned to start after 2026.

Show as a table
Matching studies by start year
Start yearStudiesAs a primary outcome
200000
200100
200200
200300
200400
200500
200610
200700
200800
200922
201010
201132
201241
201341
201461
201565
201621
201753
201842
201921
202032
202121
202273
202322
202421
202543
202641

Library tests named most

  • Go/No-Go Task65 studies, 32 as a primary outcome
  • Continuous Performance Test16 studies, 5 as a primary outcome
  • Stop-Signal Task11 studies, 6 as a primary outcome
  • Digit Span Test9 studies, 2 as a primary outcome
  • AX Continuous Performance Test7 studies, 0 as a primary outcome
  • Eriksen Flanker Task6 studies, 3 as a primary outcome
  • Stroop Color-Word Test5 studies, 1 as a primary outcome
  • Delay Discounting4 studies, 1 as a primary outcome
  • Attention Network Test3 studies, 2 as a primary outcome
  • N-Back Task3 studies, 2 as a primary outcome

Conditions

  • ADHD65 studies, 32 as a primary outcome
  • Sleep and sleep disorders4 studies, 1 as a primary outcome
  • Substance use and addiction2 studies, 1 as a primary outcome
  • Autism2 studies, 1 as a primary outcome
  • Healthy volunteers1 study, 0 as a primary outcome
  • Aging, frailty and exercise1 study, 1 as a primary outcome

Phases

Participants

Lead sponsor: industry 1, other 64. Interventional 57, observational 8.

As a primary outcomeSecondary or other outcomeThe Go/No-Go Task

The studies, newest registration first

Each number opens the study's record on ClinicalTrials.gov.

Registered studies that match the filters, newest registration first, with the library tests each one names and the outcome list that names them.
StudyStartPhaseConditionsParticipantsLead sponsorStatusLibrary tests named, with the latest time point
NCT07767617Start2026PhaseNot applicableConditionsADHD, Sleep and sleep disordersParticipants150Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Digit Span TestSecondary6 months
  • Go/No-Go TaskSecondary4 weeks
  • Continuous Performance TestSecondary6 months
  • Stop-Signal TaskSecondary4 weeks
  • Delay DiscountingSecondary6 months
  • AX Continuous Performance TestWording unclear
  • Balloon RiskSecondary4 weeks
  • Beads TaskSecondary6 months
NCT07650643Start2026PhasePhase 4ConditionsADHDParticipants220Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Go/No-Go TaskSecondary4 weeks
NCT07442058Start2026PhaseNot applicableConditionsADHDParticipants35Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Go/No-Go TaskSecondary6 weeks
  • Stop-Signal TaskSecondary6 weeks
NCT07318935Start2024PhaseNot applicableConditionsADHDParticipants69Lead sponsorOtherStatusCompletedLibrary tests named
  • Stroop Color-Word TestSecondary1 week
  • Digit Span TestSecondary1 week
  • Go/No-Go TaskSecondary1 week
  • Card Sorting Test (Berg)Secondary1 week
NCT07228650Start2025PhaseObservationalConditionsADHDParticipants500Lead sponsorOtherStatusRecruitingLibrary tests named
  • Go/No-Go TaskPrimary2 years
  • Continuous Performance TestPrimary2 years
NCT07189442Start2025PhaseNot applicableConditionsADHD, AutismParticipants17Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskPrimarysame day
  • Stop-Signal TaskPrimarysame day
NCT07084649Start2025PhasePhase 1/2ConditionsADHDParticipants15Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary
  • N-Back TaskSecondary
  • Go/No-Go TaskSecondary
NCT07061470Start2027PhasePhase 1/2ConditionsADHD, Sleep and sleep disordersParticipants70Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Go/No-Go TaskSecondary2 weeks
  • Continuous Performance TestSecondary2 weeks
  • Eriksen Flanker TaskSecondary2 weeks
  • Dimensional Change Card SortSecondary2 weeks
NCT07037030Start2026PhaseNot applicableConditionsADHDParticipants10Lead sponsorOtherStatusRecruitingLibrary tests named
  • Go/No-Go TaskPrimary
NCT06810180Start2025PhaseNot applicableConditionsADHD, Aging, frailty and exercise, Sleep and sleep disordersParticipants200Lead sponsorOtherStatusRecruitingLibrary tests named
  • Go/No-Go TaskPrimary2 weeks
  • Eriksen Flanker TaskPrimary2 weeks
  • Stop-Signal TaskPrimary2 weeks
  • Delay DiscountingPrimary2 weeks
  • Mirror Tracing TaskPrimary2 weeks
NCT06657469Start2017PhaseNot applicableConditionsADHDParticipants80Lead sponsorOtherStatusCompletedLibrary tests named
  • Digit Span TestPrimary13 weeks
  • Go/No-Go TaskPrimary13 weeks
  • Continuous Performance TestPrimary13 weeks
  • Matrix ReasoningPrimary13 weeks
  • Corsi Block-Tapping TestPrimary13 weeks
  • Visual Search TestPrimary13 weeks
NCT06632249Start2024PhaseNot applicableConditionsADHDParticipants98Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary4 weeks
  • Symbol CodingSecondary4 weeks
  • Go/No-Go TaskPrimary4 weeks
  • Continuous Performance TestSecondary4 weeks
  • Choice Reaction TimeSecondary4 weeks
  • Corsi Block-Tapping TestSecondary4 weeks
NCT06241300Start2023PhaseNot applicableConditionsADHDParticipants180Lead sponsorOtherStatusRecruitingLibrary tests named
  • Go/No-Go TaskPrimary4 months
NCT06030024Start2021PhaseNot applicableConditionsADHDParticipants10Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskPrimary1 week
  • Continuous Performance TestPrimary1 week
  • AX Continuous Performance TestWording unclear
  • Gradual-Onset Continuous Performance TaskPrimary1 week
NCT05927506Start2015PhaseObservationalConditionsADHDParticipants312Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskPrimary2 days
NCT05668195Start2022PhaseNot applicableConditionsADHDParticipants200Lead sponsorOtherStatusStatus unknownLibrary tests named
  • N-Back TaskPrimary13 weeks
  • Go/No-Go TaskPrimary13 weeks
  • Stop-Signal TaskPrimary13 weeks
  • Simon TaskPrimary13 weeks
NCT05650775Start2023PhasePhase 1ConditionsADHDParticipants16Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskPrimarysame day
  • Oddball Target DetectionPrimarysame day
NCT05582928Start2022PhaseNot applicableConditionsADHD, Healthy volunteersParticipants60Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Go/No-Go TaskSecondary2 weeks
NCT05391698Start2022PhaseNot applicableConditionsADHDParticipants16Lead sponsorOtherStatusCompleted

Paper

Library tests named
  • Digit Span TestSecondary16 weeks
  • Go/No-Go TaskPrimary16 weeks
  • Tower PlanningSecondary16 weeks
  • Attention Network TestPrimary16 weeks
  • Tower of HanoiSecondary16 weeks
NCT05374187Start2022PhaseNot applicableConditionsADHDParticipants218Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskOther outcome8 weeks
  • Attention Network TestOther outcome8 weeks
NCT05308706Start2022PhaseNot applicableConditionsADHDParticipants100Lead sponsorOtherStatusActive, not recruitingLibrary tests named
  • Go/No-Go TaskPrimary8 weeks
  • Eriksen Flanker TaskPrimary8 weeks
NCT05155696Start2022PhaseNot applicableConditionsADHDParticipants81Lead sponsorOtherStatusCompleted

Paper

Library tests named
  • Go/No-Go TaskSecondary6 weeks
NCT05118932Start2017PhaseNot applicableConditionsADHDParticipants196Lead sponsorOtherStatusCompletedLibrary tests named
  • Go/No-Go TaskSecondary9 months
  • Eriksen Flanker TaskOther outcome9 months
NCT05049239Start2021PhaseNot applicableConditionsADHDParticipants75Lead sponsorOtherStatusActive, not recruitingLibrary tests named
  • Go/No-Go TaskSecondary12 months
  • Continuous Performance TestSecondary12 months
  • AX Continuous Performance TestSecondary12 months
NCT04634006Start2020PhaseNot applicableConditionsADHDParticipants75Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Stroop Color-Word TestPrimary4 weeks
  • Go/No-Go TaskPrimary4 weeks
  • Stop-Signal TaskPrimary4 weeks

Page 1 of 3

Questions, answered from the data

How many ADHD trials use the Go/No-Go Task?

65 registered ADHD studies on ClinicalTrials.gov name it in an outcome measure, 32 of them in a primary outcome: 18% of the condition's 357 studies with a cognitive outcome, against 4% of all of them. It is the 2nd most named test in ADHD trials.

Which tests do ADHD trials use with the Go/No-Go Task?

The Continuous Performance Test (16 studies), the Stop-Signal Task (11 studies) and the Digit Span Test (9 studies).

When do ADHD trials measure the Go/No-Go Task?

Half of the primary outcomes that name the Go/No-Go Task are measured within 8 weeks of the start, and the middle half from 6 days to 14 weeks. 28 primary outcomes give a duration.

How many completed ADHD trials that use the Go/No-Go Task have reported results?

22 of the 41 completed studies that name it, 54%, have reported results: 12 posted them on ClinicalTrials.gov, 15 have a results paper linked to the registry record, and 5 did both. The other 19 show neither. Of all completed studies with a cognitive outcome, 46% have reported results.

More on the Go/No-Go Task and ADHD

  • Every cognitive test in ADHD trials: 357 studies
  • The Go/No-Go Task in all clinical trials: 702 studies

The Go/No-Go Task in other conditions

  • Substance use and addiction80
  • Depression and bipolar disorder79
  • Anxiety, PTSD and OCD63

Other tests in ADHD trials

  • Continuous Performance Test123
  • Stroop Color-Word Test61
  • Digit Span Test58

How the studies are counted

For each test family, the census runs ClinicalTrials.gov's own outcome search for the family's names and reads every study first posted by the day the family was counted. These studies were read on 10 November 2026. A study counts once on a page, however many tests it names. Counts for a test cover every version of the task under any of its names, so a page can count studies that used a commercial version.

The census adds two things to each record and changes nothing in it: which outcome list names the test (primary, then secondary, then other), and the condition groups, matched on the study's condition names and MeSH terms. A study can fall in several groups; one whose only condition is cognitive impairment or decline falls in “Cognitive impairment and decline”. Studies that name only instruments outside the library count in every total and share but are not listed.

A second read on 10 November 2026 added each study's overall status, whether results are posted, its intervention types, the countries of its sites and the time frame of the outcome that names each test. A time frame counts by the latest time point it names: “Baseline, 12 and 24 weeks” is 24 weeks, a single visit is within a day, and one that names no duration, such as “end of treatment”, is left out of the timings.

A third read on 10 November 2026 added the papers the registry links to each study: those its sponsor lists as reporting results, and those PubMed links to it through the study's NCT number. A study has a results paper when one of them came out in or after the month of its primary completion and PubMed does not class it as a protocol, review or comment. A paper that never gives the NCT number is not linked, so some studies counted as reporting neither did publish.

Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine, which does not endorse these pages. Every study line is in the data release 2.1.0, and the explorer's own file is clinical-trials-studies.json.

The census counts Go/No-Go Task and Go/No-Go Game as one test family, so this page counts their studies together.

Run the Go/No-Go Task in your trial

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