ConductCognition

  • Domains

    Tests

    • Processing speed43
    • Attention113
    • Working memory50
    • Executive function143
    • Episodic memory72
    • Response inhibition9
    • Social cognition75
    • Language42

    Most used

    Evidence

    1. Verbal Fluency TestGradeA
    2. Stroop Color-Word TestGradeA
    3. Trail Making TestGradeA
    4. N-Back TaskGradeA
    5. Go/No-Go TaskGradeA
    6. Digit Span TestGradeA
    7. Symbol Coding TestGradeA
    8. Verbal Learning TestGradeA
    REDTry it nowStroop Color-Word Test
    All 547 tests

    Browse by

    • Phone290
    • Tablet323
    • Untimed326
    • Up to 5 minutes69
    • Evidence grade A40

  • First studies

    Grade, length

    • Reaction Time StudyGradeA7 min
    • Pilot ScreeningGradeA15 min
    • Medication StudiesGradeA−26 min
    • Language-Minimized ScreeningGradeA−30 min

    Age groups

    • Older Adult Executive SpeedGradeA20 min
    • School-AgeGradeA−33 min

    Memory

    • At-Home MemoryGradeA26 min
    • Working Memory and LearningGradeA−19 min
    • Associative MemoryGradeB32 min
    • Working Memory CapacityGradeB34 min

    Language and perception

    • LanguageGradeA−33 min
    • Visual PerceptionGradeB27 min
    • Listening and Auditory ProcessingGradeB31 min

    Executive function and attention

    • Executive ControlGradeA18 min
    • Attention and ImpulsivityGradeA−26 min
    • Visual AttentionGradeB27 min
    • Creativity and Flexible ThinkingGradeB30 min
    • Reasoning and SpatialGradeB32 min

    Movement

    • Motor and AttentionGradeA−29 min
    • Motor LearningGradeB34 min

    Behavior, mood and choice

    • Food Choice and Self-ControlGradeA−29 min
    • Sleep and FatigueGradeB23 min
    • Social CognitionGradeB23 min
    • Impulsivity and Substance UseGradeB26 min
    • Emotion and MoodGradeB28 min
    • Decisions and RewardGradeB29 min
    All 26 batteries

    Find one

    Up to 15 minutes2Up to 30 minutes19Phone8
    Test order labBattery gradesHow batteries work

  • Use and evidence

    • Overview
    • Compare all 547 tests
    • Test-retest
    • Reliability and validity
    • Battery grades26
    • Download and cite

    Clinical trials

    • Overview
    • By condition25
    • By test101
    • Trial design benchmark
    • Cognitive outcomes, 2026

    Conditions

    Registered studies

    • Dementia and Alzheimer's1,673
    • Aging, frailty and exercise1,398
    • Depression and bipolar disorder1,247
    • Stroke1,233
    • Substance use and addiction895
    • Parkinson's disease892
    • Cancer760
    All 25 conditions
    16,361Registered studies name a cognitive test in an outcome measure11,688 name a test you can run hereExplore the studies
  • 1

    Build

    • Study design
    • Customize tests
    • Repeat visits
    • Study cost calculator
    2

    Recruit

    • Recruitment setup
    • Prolific
    • Sona Systems
    • CloudResearch Connect
    • Qualtrics
    3

    Run

    • Remote testing
    • Participant devices
    • Phone timing check
    • Offline edition
    4

    Results

    • Automated scoring
    • Test norms
    • Study Quality Monitor
    • Data export
    Platform overview

    Compliance

    • HIPAA-ready testing
    • US clinical research
    • Data Policy
    • Privacy Policy
    • Terms of Use

  • Research areas

    Tests used in each

    • Aging and dementia188
    • Decisions and reward105
    • Child development and education87
    • Language and bilingualism64
    • Social behavior62
    • Psychiatric groups35
    • Training and intervention28
    • Mood, anxiety and trauma25
    • Substance use and impulsivity25
    • Neurological and movement research19
    • Brain injury and concussion14
    • Sleep and fatigue14
    • ADHD11
    • Eating and obesity8
    • Medication and drug trials8

    Research settings

    • Student participant pools
    • Teaching a class
    • Clinical trials
    • US clinical research
    • Sites without internet
    Planning a study?

  • Methods

    • How evidence grades work
    • How test batteries work
    • How test order works
    Methods and questions

    Help

    • FAQ
    • Recruitment guides
    • Compare platforms

    Updates

    • Blog
    • New tests by email
    Latest post10 November 2026What you can do in ConductCognition todayA short tour of ConductCognition as it stands on 10 November. After this, we'll post when something changes how you run a study.Read the post
  • Pricing
Start Free
Log In
Log InStart Free
  1. Home
  2. /Data
  3. /Clinical trials
  4. /Conditions
  5. /Stroke
  6. /Verbal Learning

Clinical trials data

Verbal Learning in stroke trials: 63 registered studies

Every registered stroke study on ClinicalTrials.gov that names Verbal Learning 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 stroke studies name it in an outcome measure
63
Name it in a primary outcome, 30%
19 of 63
Of the condition's 1,233 studies name it, against 11% of all registered studies
5%
Other conditions
Median participants per study
60
By phase
Try Verbal LearningTry the Grocery Trip Game

Tests named in the same studies

The library tests that stroke studies naming Verbal Learning name most often beside it.
  1. 1

    Verbal Fluency30 studies, 10 as a primary outcome

  2. 2

    Trail Making Test29 studies, 8 as a primary outcome

  3. 3

    Digit Span Test28 studies, 6 as a primary outcome

  4. 4

    Stroop Color-Word Test17 studies, 1 as a primary outcome

  5. 5

    Picture Naming Test12 studies, 5 as a primary outcome

  6. 6

    Symbol Coding11 studies, 3 as a primary outcome

  7. 7

    Category Fluency9 studies, 3 as a primary outcome

  8. 8

    Complex Figure Copy and Recall7 studies, 2 as a primary outcome

  9. 9

    Short Story Recall6 studies, 1 as a primary outcome

  10. 10

    Corsi Block-Tapping Test4 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: 0 studies, 0 with a test as a primary outcome2007: 1 studies, 0 with a test as a primary outcome2008: 0 studies, 0 with a test as a primary outcome2009: 2 studies, 0 with a test as a primary outcome2010: 2 studies, 0 with a test as a primary outcome20102011: 0 studies, 0 with a test as a primary outcome2012: 1 studies, 0 with a test as a primary outcome2013: 3 studies, 2 with a test as a primary outcome2014: 2 studies, 1 with a test as a primary outcome2015: 4 studies, 0 with a test as a primary outcome20152016: 2 studies, 1 with a test as a primary outcome2017: 4 studies, 1 with a test as a primary outcome2018: 3 studies, 0 with a test as a primary outcome2019: 1 studies, 0 with a test as a primary outcome2020: 6 studies, 3 with a test as a primary outcome20202021: 6 studies, 3 with a test as a primary outcome2022: 6 studies, 4 with a test as a primary outcome2023: 4 studies, 3 with a test as a primary outcome2024: 3 studies, 0 with a test as a primary outcome2025: 11 studies, 1 with a test as a primary outcome20252026: 2 studies, 0 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
200600
200710
200800
200920
201020
201100
201210
201332
201421
201540
201621
201741
201830
201910
202063
202163
202264
202343
202430
2025111
202620

Phases and study sizes

By phase

  • Phase 12 studies, 0 as a primary outcome
  • Phase 1/21 studies, 0 as a primary outcome
  • Phase 26 studies, 3 as a primary outcome
  • Phase 2/31 studies, 0 as a primary outcome
  • Phase 32 studies, 1 as a primary outcome
  • Phase 41 studies, 0 as a primary outcome
  • Not applicable39 studies, 11 as a primary outcome
  • Observational11 studies, 4 as a primary outcome

Participants per study

102050100200
  • Not applicable41 median, 20 to 84
  • Observational112 median, 100 to 225
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 stroke study that names Verbal Learning, by phase
PhaseStudies with a sizeMedianMiddle half
Not applicable374120 to 84
Observational11112100 to 225

When stroke trials measure it

Half of the primary outcomes that name Verbal Learning are measured within 6 months of the start, and the middle half from 12 weeks to 12 months. 19 primary outcomes give a duration.

Latest time point of each outcome

  • Within a day9 outcomes, 4 as a primary outcome
  • Up to 4 weeks8 outcomes, 0 as a primary outcome
  • 1 to 3 months17 outcomes, 4 as a primary outcome
  • 3 to 6 months7 outcomes, 3 as a primary outcome
  • 6 to 12 months12 outcomes, 4 as a primary outcome
  • 1 to 2 years5 outcomes, 2 as a primary outcome
  • Over 2 years4 outcomes, 2 as a primary outcome
  • No duration given1 outcomes, 0 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

62 of the 63 outcome measures give a duration. A single visit counts as within a day.

Status, results, interventions and countries

Status

  • Recruiting16 studies, 4 as a primary outcome
  • Not yet recruiting2 studies, 0 as a primary outcome
  • Active, not recruiting3 studies, 1 as a primary outcome
  • Completed29 studies, 9 as a primary outcome
  • Stopped early2 studies, 2 as a primary outcome
  • Status unknown11 studies, 3 as a primary outcome

What they test

  • Behavioral18 studies, 5 as a primary outcome
  • Drug11 studies, 6 as a primary outcome
  • Device16 studies, 4 as a primary outcome
  • Procedure10 studies, 4 as a primary outcome
  • Diagnostic test3 studies, 1 as a primary outcome
  • Biological3 studies, 0 as a primary outcome
  • Radiation1 studies, 0 as a primary outcome
  • Combination product1 studies, 0 as a primary outcome
  • Genetic1 studies, 0 as a primary outcome
  • Other11 studies, 2 as a primary outcome
  • None given2 studies, 0 as a primary outcome

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

Where their sites are

  • United States22 studies, 8 as a primary outcome
  • Spain5 studies, 1 as a primary outcome
  • Sweden5 studies, 2 as a primary outcome
  • China4 studies, 2 as a primary outcome
  • Netherlands4 studies, 1 as a primary outcome
  • Norway4 studies, 0 as a primary outcome
  • Canada2 studies, 0 as a primary outcome
  • Russia2 studies, 0 as a primary outcome
  • Singapore2 studies, 0 as a primary outcome
  • Australia1 studies, 1 as a primary outcome
  • Brazil1 studies, 0 as a primary outcome
  • Cyprus1 studies, 1 as a primary outcome

18 countries in all. A study with sites in several counts in each; 4 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 stroke studies that name Verbal Learning: 13 of 29, 45%

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

Completed stroke studies that name Verbal Learning and every completed study, by how they reported results
ResultsCompleted stroke studies that name Verbal LearningEvery completed study
Results on ClinicalTrials.gov and a paper1, 3%776, 10%
Results on ClinicalTrials.gov only5, 17%1,139, 14%
A results paper only7, 24%1,711, 22%
Neither16, 55%4,327, 54%

The 63 studies

Filter by phase, sponsor, status, country, intervention, outcome list, size and start year. Each study links to its record on ClinicalTrials.gov.
ConditionStroke
TestVerbal Learning

63 studies match. 19 name Verbal Learning in a primary outcome. Median size 60 participants. Median time to the primary outcome: 6 months.

Loading 63 studies; the filters turn on when they arrive.

By start year
0510152000: 0 studies, 0 naming Verbal Learning in a primary outcome20002001: 0 studies, 0 naming Verbal Learning in a primary outcome2002: 0 studies, 0 naming Verbal Learning in a primary outcome2003: 0 studies, 0 naming Verbal Learning in a primary outcome2004: 0 studies, 0 naming Verbal Learning in a primary outcome2005: 0 studies, 0 naming Verbal Learning in a primary outcome20052006: 0 studies, 0 naming Verbal Learning in a primary outcome2007: 1 studies, 0 naming Verbal Learning in a primary outcome2008: 0 studies, 0 naming Verbal Learning in a primary outcome2009: 2 studies, 0 naming Verbal Learning in a primary outcome2010: 2 studies, 0 naming Verbal Learning in a primary outcome20102011: 0 studies, 0 naming Verbal Learning in a primary outcome2012: 1 studies, 0 naming Verbal Learning in a primary outcome2013: 3 studies, 2 naming Verbal Learning in a primary outcome2014: 2 studies, 1 naming Verbal Learning in a primary outcome2015: 4 studies, 0 naming Verbal Learning in a primary outcome20152016: 2 studies, 1 naming Verbal Learning in a primary outcome2017: 4 studies, 1 naming Verbal Learning in a primary outcome2018: 3 studies, 0 naming Verbal Learning in a primary outcome2019: 1 studies, 0 naming Verbal Learning in a primary outcome2020: 6 studies, 3 naming Verbal Learning in a primary outcome20202021: 6 studies, 3 naming Verbal Learning in a primary outcome2022: 6 studies, 4 naming Verbal Learning in a primary outcome2023: 4 studies, 3 naming Verbal Learning in a primary outcome2024: 3 studies, 0 naming Verbal Learning in a primary outcome2025: 11 studies, 1 naming Verbal Learning in a primary outcome20252026: 2 studies, 0 naming Verbal Learning in a primary outcome

2026 is partly planned starts.

Show as a table
Matching studies by start year
Start yearStudiesAs a primary outcome
200000
200100
200200
200300
200400
200500
200600
200710
200800
200920
201020
201100
201210
201332
201421
201540
201621
201741
201830
201910
202063
202163
202264
202343
202430
2025111
202620

Library tests named most

  • Verbal Learning63 studies, 19 as a primary outcome
  • Verbal Fluency30 studies, 10 as a primary outcome
  • Trail Making Test29 studies, 8 as a primary outcome
  • Digit Span Test28 studies, 6 as a primary outcome
  • Stroop Color-Word Test17 studies, 1 as a primary outcome
  • Picture Naming Test12 studies, 5 as a primary outcome
  • Symbol Coding11 studies, 3 as a primary outcome
  • Category Fluency9 studies, 3 as a primary outcome
  • Complex Figure Copy and Recall7 studies, 2 as a primary outcome
  • Short Story Recall6 studies, 1 as a primary outcome

Largest condition groups

  • Stroke63 studies, 19 as a primary outcome
  • Brain injury and concussion12 studies, 3 as a primary outcome
  • Cardiovascular disease7 studies, 4 as a primary outcome
  • Cancer4 studies, 1 as a primary outcome
  • Depression and bipolar disorder3 studies, 1 as a primary outcome
  • Pain and fatigue3 studies, 1 as a primary outcome
  • Dementia and Alzheimer's2 studies, 2 as a primary outcome
  • Multiple sclerosis2 studies, 1 as a primary outcome
  • Obesity and diabetes2 studies, 2 as a primary outcome
  • Delirium, surgery and intensive care2 studies, 0 as a primary outcome
  • Mild cognitive impairment1 study, 1 as a primary outcome
  • Parkinson's disease1 study, 1 as a primary outcome

Phases

Participants

Lead sponsor: industry 6, other 57. Interventional 52, observational 11.

As a primary outcomeSecondary or other outcomeVerbal Learning

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
NCT07719387Start2025PhaseNot applicableConditionsStrokeParticipants20Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningSecondary6 weeks
  • Digit Span TestSecondary6 weeks
  • Short Story RecallSecondary6 weeks
NCT07624630Start2026PhaseObservationalConditionsStroke, Aging, frailty and exerciseParticipants50Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondarysame day
  • Stroop Color-Word TestPrimarysame day
  • Verbal LearningSecondarysame day
  • Verbal FluencySecondarysame day
NCT07541560Start2025PhaseNot applicableConditionsStrokeParticipants90Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary7 weeks
  • Verbal LearningSecondary7 weeks
  • Digit Span TestSecondary7 weeks
NCT07429526Start2013PhaseNot applicableConditionsStroke, Brain injury and concussion, Pain and fatigueParticipants12Lead sponsorOtherStatusCompleted

Paper

Library tests named
  • Verbal LearningPrimary13 weeks
  • Digit Span TestPrimary13 weeks
  • Paced Visual Serial Addition TestPrimary13 weeks
NCT07396025Start2025PhaseNot applicableConditionsStroke, Cardiovascular diseaseParticipants60Lead sponsorOtherStatusRecruitingLibrary tests named
  • Stroop Color-Word TestOther outcome2 years
  • Verbal LearningOther outcome2 years
  • Block Copy TestOther outcome2 years
NCT07345481Start2026PhaseObservationalConditionsStroke, Brain injury and concussionParticipants40Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondarysame day
  • Stroop Color-Word TestSecondarysame day
  • Verbal LearningSecondarysame day
  • Digit Span TestSecondarysame day
  • Task Switching TestSecondarysame day
  • Serial Reaction TimeSecondarysame day
NCT07252544Start2025PhasePhase 3ConditionsStrokeParticipants3,156Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Stroop Color-Word TestOther outcome12 months
  • Verbal LearningOther outcome12 months
  • Verbal FluencyOther outcome12 months
NCT07119827Start2025PhaseObservationalConditionsStroke, Brain injury and concussionParticipants250Lead sponsorOtherStatusRecruitingLibrary tests named
  • Stroop Color-Word TestSecondary13 weeks
  • Verbal LearningSecondary13 weeks
  • Verbal FluencySecondary18 months
  • Digit Span TestSecondary13 weeks
  • Category FluencySecondary18 months
  • Complex Figure Copy and RecallSecondary13 weeks
  • Corsi Block-Tapping TestSecondary13 weeks
  • Design Fluency TestSecondary13 weeks
NCT07030985Start2025PhaseNot applicableConditionsStrokeParticipants55Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Verbal LearningSecondary12 months
  • Verbal FluencySecondary12 months
  • Symbol CodingSecondary12 months
  • Picture Naming TestSecondary12 months
  • Card Sorting Test (Berg)Secondary12 months
NCT06876597Start2025PhaseNot applicableConditionsStrokeParticipants1,047Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary13 weeks
  • Verbal LearningSecondary13 weeks
NCT06800040Start2025PhaseNot applicableConditionsStroke, Brain injury and concussionParticipants20Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestOther outcome13 weeks
  • Verbal LearningSecondary13 weeks
NCT06774287Start2025PhaseNot applicableConditionsStroke, Brain injury and concussionParticipants6Lead sponsorOtherStatusCompletedLibrary tests named
  • Verbal LearningSecondary13 weeks
  • Digit Span TestSecondary13 weeks
NCT06612710Start2025PhasePhase 1ConditionsStrokeParticipants69Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningSecondary6 months
  • Clock Drawing TaskSecondary6 months
NCT06556316Start2020PhaseObservationalConditionsStroke, Brain injury and concussionParticipants200Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Verbal LearningPrimary6 months
  • Verbal FluencyPrimary6 months
  • Category FluencyPrimary6 months
  • Picture Naming TestPrimary6 months
  • Vocabulary TestPrimary6 months
NCT06471127Start2025PhaseNot applicableConditionsStrokeParticipants90Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningPrimary12 months
  • Novel Word Learning TaskPrimary12 months
  • Semantic Triads TaskPrimary12 months
NCT06336174Start2022PhaseObservationalConditionsStroke, Cardiovascular diseaseParticipants100Lead sponsorOtherStatusRecruitingLibrary tests named
  • Stroop Color-Word TestSecondary12 months
  • Verbal LearningPrimary12 months
  • Verbal FluencySecondary12 months
  • Clock Drawing TaskSecondary12 months
NCT06330298Start2021PhaseNot applicableConditionsStroke, Multiple sclerosis, CancerParticipants84Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Trail Making TestOther outcomesame day
  • Verbal LearningOther outcomesame day
  • Verbal FluencyOther outcomesame day
  • Digit Span TestOther outcomesame day
  • Symbol CodingOther outcomesame day
  • Category FluencyOther outcomesame day
  • Social Slips Stories TaskSecondary10 months
NCT06214364Start2024PhaseNot applicableConditionsStroke, Brain injury and concussionParticipants36Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Verbal LearningSecondary6 weeks
NCT06076928Start2024PhaseNot applicableConditionsStrokeParticipants13Lead sponsorOtherStatusCompletedLibrary tests named
  • Trail Making TestSecondary12 months
  • Verbal LearningSecondary12 months
  • Verbal FluencySecondary12 months
  • Digit Span TestSecondary12 months
  • Task Switching TestSecondary12 months
NCT06021470Start2023PhaseNot applicableConditionsStrokeParticipants64Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Verbal LearningPrimary4 months
  • Verbal FluencyPrimary4 months
  • Digit Span TestPrimary4 months
  • Symbol CodingPrimary4 months
  • Picture Naming TestPrimary4 months
  • Complex Figure Copy and RecallPrimary4 months
NCT05951777Start2024PhasePhase 2ConditionsStroke, Brain injury and concussion, CancerParticipants51Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Verbal LearningSecondary12 months
  • Verbal FluencySecondary12 months
  • Dimensional Change Card SortSecondary12 months
  • Vocabulary TestSecondary12 months
  • Size Order Memory TestSecondary12 months
  • Pattern and Letter ComparisonSecondary12 months
NCT05929287Start2023PhaseNot applicableConditionsStrokeParticipants30Lead sponsorOtherStatusCompleted

Paper

Library tests named
  • Verbal LearningPrimary13 weeks
  • Verbal FluencyPrimary13 weeks
  • Complex Figure Copy and RecallPrimary13 weeks
  • Cancellation TestPrimary13 weeks
  • Symbol Scan TaskPrimary13 weeks
NCT05908994Start2021PhaseObservationalConditionsStrokeParticipants100Lead sponsorOtherStatusStatus unknown

Paper

Library tests named
  • Stroop Color-Word TestSecondary2 years
  • Verbal LearningSecondary2 years
  • Digit Span TestSecondary2 years
  • Complex Figure Copy and RecallSecondary2 years
NCT05819008Start2023PhaseObservationalConditionsStroke, Brain injury and concussion, Parkinson's disease, Multiple sclerosis, Cancer, EpilepsyParticipants350Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimarysame day
  • Verbal LearningPrimarysame day
  • Verbal FluencyPrimarysame day
  • Corsi Block-Tapping TestPrimarysame day
NCT05584605Start2022PhaseNot applicableConditionsStrokeParticipants40Lead sponsorOtherStatusStatus unknownLibrary tests named
  • Stroop Color-Word TestSecondary13 weeks
  • Verbal LearningSecondary13 weeks
  • Digit Span TestSecondary13 weeks
  • Corsi Block-Tapping TestSecondary13 weeks

Page 1 of 3

Questions, answered from the data

How many stroke trials use Verbal Learning?

63 registered stroke studies on ClinicalTrials.gov name it in an outcome measure, 19 of them in a primary outcome: 5% of the condition's 1,233 studies with a cognitive outcome, against 11% of all of them. It is the 7th most named test in stroke trials.

Which tests do stroke trials use with Verbal Learning?

Verbal Fluency (30 studies), the Trail Making Test (29 studies) and the Digit Span Test (28 studies).

When do stroke trials measure Verbal Learning?

Half of the primary outcomes that name Verbal Learning are measured within 6 months of the start, and the middle half from 12 weeks to 12 months. 19 primary outcomes give a duration.

How many completed stroke trials that use Verbal Learning have reported results?

13 of the 29 completed studies that name it, 45%, have reported results: 6 posted them on ClinicalTrials.gov, 8 have a results paper linked to the registry record, and 1 did both. The other 16 show neither. Of all completed studies with a cognitive outcome, 46% have reported results.

More on Verbal Learning and stroke

  • Every cognitive test in stroke trials: 1,233 studies
  • Verbal Learning in all clinical trials: 1,832 studies

Verbal Learning in other conditions

  • Cancer235
  • Dementia and Alzheimer's224
  • Mild cognitive impairment183
  • Depression and bipolar disorder178
  • Multiple sclerosis139
  • Aging, frailty and exercise128
  • Schizophrenia and psychosis112
  • Brain injury and concussion111
  • Cognitive impairment and decline79
  • Substance use and addiction77
  • Obesity and diabetes74
  • Pain and fatigue72
  • Anxiety, PTSD and OCD70
  • Sleep and sleep disorders66
  • Cardiovascular disease64
  • Parkinson's disease61
  • Healthy volunteers56
  • Delirium, surgery and intensive care51

Other tests in stroke trials

  • Trail Making Test156
  • Verbal Fluency110
  • Stroop Color-Word Test105
  • Digit Span Test100
  • Picture Naming Test99
  • Cancellation Test75
  • Symbol Coding61

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 Verbal Learning and Grocery Trip Game as one test family, so this page counts their studies together.

Run Verbal Learning in your trial

Choose tests with a record in registered trials, and run them in a browser at every site, on the same version each visit.

Start free
ConductCognition

Hosted browser-native cognitive testing for academic and commercial research workflows.

A product of ConductScience, Inc.

New tests and features, about once a month. Unsubscribe at any time.

Tests

  • All cognitive tests
  • Test batteries
  • Use and evidence
  • Test norms
  • Trail Making Test
  • N-Back Task
  • Automated scoring
  • Study design
  • New tests by email

Guides

  • Methods and questions
  • Blog
  • Recruitment setup
  • Participant devices
  • Prolific
  • Sona Systems
  • CloudResearch Connect
  • Qualtrics

Use cases

  • Student participant pools
  • Aging and dementia research
  • Clinical trials
  • US clinical research
  • Remote testing

Compare and buy

  • Pricing
  • Compare platforms
  • Offline edition
  • FAQ

Trust

  • Study Quality Monitor
  • HIPAA-ready testing
  • Data export
  • Privacy Policy
  • Terms of Use
  • Data Policy

Company

  • ConductScience
  • Affiliate Program
© 2026 ConductScience, Inc. Research use only.