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. /Dementia and Alzheimer's
  6. /Verbal Learning

Clinical trials data

Verbal Learning in dementia and Alzheimer's trials: 224 registered studies

Every registered dementia and Alzheimer's disease 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 dementia and Alzheimer's disease studies name it in an outcome measure
224
Name it in a primary outcome, 46%
102 of 224
Of the condition's 1,673 studies name it, against 11% of all registered studies
13%
Other conditions
Median participants per study
70
By phase
Try Verbal LearningTry the Grocery Trip Game

Tests named in the same studies

The library tests that dementia and Alzheimer's disease studies naming Verbal Learning name most often beside it.
  1. 1

    Trail Making Test99 studies, 39 as a primary outcome

  2. 2

    Verbal Fluency80 studies, 33 as a primary outcome

  3. 3

    Digit Span Test79 studies, 33 as a primary outcome

  4. 4

    Category Fluency57 studies, 23 as a primary outcome

  5. 5

    Picture Naming Test47 studies, 17 as a primary outcome

  6. 6

    Symbol Coding37 studies, 18 as a primary outcome

  7. 7

    Stroop Color-Word Test32 studies, 17 as a primary outcome

  8. 8

    Complex Figure Copy and Recall32 studies, 15 as a primary outcome

  9. 9

    Short Story Recall27 studies, 10 as a primary outcome

  10. 10

    Clock Drawing Task18 studies, 9 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: 1 studies, 1 with a test as a primary outcome2004: 2 studies, 2 with a test as a primary outcome2005: 3 studies, 0 with a test as a primary outcome20052006: 1 studies, 1 with a test as a primary outcome2007: 2 studies, 0 with a test as a primary outcome2008: 2 studies, 0 with a test as a primary outcome2009: 3 studies, 1 with a test as a primary outcome2010: 7 studies, 3 with a test as a primary outcome20102011: 6 studies, 3 with a test as a primary outcome2012: 7 studies, 4 with a test as a primary outcome2013: 7 studies, 4 with a test as a primary outcome2014: 8 studies, 4 with a test as a primary outcome2015: 11 studies, 4 with a test as a primary outcome20152016: 6 studies, 1 with a test as a primary outcome2017: 10 studies, 5 with a test as a primary outcome2018: 15 studies, 9 with a test as a primary outcome2019: 20 studies, 11 with a test as a primary outcome2020: 12 studies, 5 with a test as a primary outcome20202021: 16 studies, 12 with a test as a primary outcome2022: 18 studies, 7 with a test as a primary outcome2023: 22 studies, 10 with a test as a primary outcome2024: 16 studies, 6 with a test as a primary outcome2025: 15 studies, 5 with a test as a primary outcome20252026: 13 studies, 3 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
200311
200422
200530
200611
200720
200820
200931
201073
201163
201274
201374
201484
2015114
201661
2017105
2018159
20192011
2020125
20211612
2022187
20232210
2024166
2025155
2026133

Phases and study sizes

By phase

  • Early phase 14 studies, 1 as a primary outcome
  • Phase 13 studies, 0 as a primary outcome
  • Phase 1/28 studies, 4 as a primary outcome
  • Phase 231 studies, 14 as a primary outcome
  • Phase 36 studies, 3 as a primary outcome
  • Phase 48 studies, 3 as a primary outcome
  • Not applicable126 studies, 58 as a primary outcome
  • Observational38 studies, 19 as a primary outcome

Participants per study

1020501002005001,000
  • Phase 270 median, 41 to 139
  • Not applicable58 median, 33 to 126
  • Observational285 median, 108 to 925
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 dementia and Alzheimer's disease study that names Verbal Learning, by phase
PhaseStudies with a sizeMedianMiddle half
Phase 2307041 to 139
Not applicable1255833 to 126
Observational36285108 to 925

When dementia and Alzheimer's 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 9 weeks to 12 months. 91 primary outcomes give a duration.

Latest time point of each outcome

  • Within a day14 outcomes, 8 as a primary outcome
  • Up to 4 weeks22 outcomes, 11 as a primary outcome
  • 1 to 3 months36 outcomes, 14 as a primary outcome
  • 3 to 6 months50 outcomes, 24 as a primary outcome
  • 6 to 12 months45 outcomes, 17 as a primary outcome
  • 1 to 2 years18 outcomes, 6 as a primary outcome
  • Over 2 years24 outcomes, 11 as a primary outcome
  • No duration given15 outcomes, 11 as a primary outcome

A test as a primary outcomeOnly in secondary or other outcomes

209 of the 224 outcome measures give a duration. A single visit counts as within a day.

Status, results, interventions and countries

Status

  • Recruiting44 studies, 18 as a primary outcome
  • Not yet recruiting12 studies, 3 as a primary outcome
  • Active, not recruiting8 studies, 3 as a primary outcome
  • Completed113 studies, 49 as a primary outcome
  • Stopped early21 studies, 13 as a primary outcome
  • Status unknown26 studies, 16 as a primary outcome

What they test

  • Behavioral49 studies, 31 as a primary outcome
  • Drug55 studies, 25 as a primary outcome
  • Device58 studies, 25 as a primary outcome
  • Dietary supplement6 studies, 2 as a primary outcome
  • Procedure6 studies, 3 as a primary outcome
  • Diagnostic test6 studies, 2 as a primary outcome
  • Biological8 studies, 2 as a primary outcome
  • Radiation4 studies, 2 as a primary outcome
  • Combination product1 studies, 1 as a primary outcome
  • Genetic1 studies, 1 as a primary outcome
  • Other50 studies, 20 as a primary outcome
  • None given21 studies, 9 as a primary outcome

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

Where their sites are

  • United States91 studies, 47 as a primary outcome
  • China31 studies, 13 as a primary outcome
  • Italy19 studies, 7 as a primary outcome
  • United Kingdom12 studies, 7 as a primary outcome
  • Canada10 studies, 2 as a primary outcome
  • Spain9 studies, 3 as a primary outcome
  • Germany8 studies, 2 as a primary outcome
  • Netherlands7 studies, 3 as a primary outcome
  • Singapore7 studies, 4 as a primary outcome
  • Finland6 studies, 3 as a primary outcome
  • Sweden6 studies, 2 as a primary outcome
  • Australia5 studies, 2 as a primary outcome

37 countries in all. A study with sites in several counts in each; 12 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 dementia and Alzheimer's disease studies that name Verbal Learning: 73 of 113, 65%

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

Completed dementia and Alzheimer's disease studies that name Verbal Learning and every completed study, by how they reported results
ResultsCompleted dementia and Alzheimer's disease studies that name Verbal LearningEvery completed study
Results on ClinicalTrials.gov and a paper27, 24%776, 10%
Results on ClinicalTrials.gov only18, 16%1,139, 14%
A results paper only28, 25%1,711, 22%
Neither40, 35%4,327, 54%

The 224 studies

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

224 studies match. 102 name Verbal Learning in a primary outcome. Median size 70 participants. Median time to the primary outcome: 6 months.

Loading 224 studies; the filters turn on when they arrive.

By start year
01020302000: 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: 1 studies, 1 naming Verbal Learning in a primary outcome2004: 2 studies, 2 naming Verbal Learning in a primary outcome2005: 3 studies, 0 naming Verbal Learning in a primary outcome20052006: 1 studies, 1 naming Verbal Learning in a primary outcome2007: 2 studies, 0 naming Verbal Learning in a primary outcome2008: 2 studies, 0 naming Verbal Learning in a primary outcome2009: 3 studies, 1 naming Verbal Learning in a primary outcome2010: 7 studies, 3 naming Verbal Learning in a primary outcome20102011: 6 studies, 3 naming Verbal Learning in a primary outcome2012: 7 studies, 4 naming Verbal Learning in a primary outcome2013: 7 studies, 4 naming Verbal Learning in a primary outcome2014: 8 studies, 4 naming Verbal Learning in a primary outcome2015: 11 studies, 4 naming Verbal Learning in a primary outcome20152016: 6 studies, 1 naming Verbal Learning in a primary outcome2017: 10 studies, 5 naming Verbal Learning in a primary outcome2018: 15 studies, 9 naming Verbal Learning in a primary outcome2019: 20 studies, 11 naming Verbal Learning in a primary outcome2020: 12 studies, 5 naming Verbal Learning in a primary outcome20202021: 16 studies, 12 naming Verbal Learning in a primary outcome2022: 18 studies, 7 naming Verbal Learning in a primary outcome2023: 22 studies, 10 naming Verbal Learning in a primary outcome2024: 16 studies, 6 naming Verbal Learning in a primary outcome2025: 15 studies, 5 naming Verbal Learning in a primary outcome20252026: 13 studies, 3 naming Verbal Learning in a primary outcome

2026 is partly planned starts. Not shown: 1 that started before 2000.

Show as a table
Matching studies by start year
Start yearStudiesAs a primary outcome
200000
200100
200200
200311
200422
200530
200611
200720
200820
200931
201073
201163
201274
201374
201484
2015114
201661
2017105
2018159
20192011
2020125
20211612
2022187
20232210
2024166
2025155
2026133

Library tests named most

  • Verbal Learning224 studies, 102 as a primary outcome
  • Trail Making Test99 studies, 39 as a primary outcome
  • Verbal Fluency80 studies, 33 as a primary outcome
  • Digit Span Test79 studies, 33 as a primary outcome
  • Category Fluency57 studies, 23 as a primary outcome
  • Picture Naming Test47 studies, 17 as a primary outcome
  • Symbol Coding37 studies, 18 as a primary outcome
  • Stroop Color-Word Test32 studies, 17 as a primary outcome
  • Complex Figure Copy and Recall32 studies, 15 as a primary outcome
  • Short Story Recall27 studies, 10 as a primary outcome

Largest condition groups

  • Dementia and Alzheimer's224 studies, 102 as a primary outcome
  • Mild cognitive impairment72 studies, 39 as a primary outcome
  • Aging, frailty and exercise15 studies, 7 as a primary outcome
  • Healthy volunteers9 studies, 7 as a primary outcome
  • Obesity and diabetes8 studies, 5 as a primary outcome
  • Depression and bipolar disorder7 studies, 3 as a primary outcome
  • Parkinson's disease6 studies, 5 as a primary outcome
  • Sleep and sleep disorders6 studies, 3 as a primary outcome
  • Hearing loss3 studies, 2 as a primary outcome
  • Stroke2 studies, 2 as a primary outcome
  • Brain injury and concussion2 studies, 2 as a primary outcome
  • Substance use and addiction2 studies, 2 as a primary outcome

Phases

Participants

Lead sponsor: industry 32, NIH 1, other 191. Interventional 186, observational 38.

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
NCT07883148Start2024PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants52Lead sponsorOtherStatusCompletedLibrary tests named
  • Trail Making TestSecondary8 months
  • Verbal LearningSecondary8 months
  • Verbal FluencySecondary8 months
  • Digit Span TestSecondary8 months
  • Complex Figure Copy and RecallSecondary8 months
NCT07882251Start2021PhaseNot applicableConditionsDementia and Alzheimer'sParticipants80Lead sponsorOtherStatusCompletedLibrary tests named
  • Stroop Color-Word TestPrimary5 weeks
  • Verbal LearningPrimary5 weeks
  • Digit Span TestPrimary5 weeks
  • Category FluencyPrimary5 weeks
  • Complex Figure Copy and RecallPrimary5 weeks
  • Corsi Block-Tapping TestPrimary5 weeks
  • Line Angle MatchingPrimary5 weeks
NCT07839650Start2026PhaseNot applicableConditionsDementia and Alzheimer'sParticipants30Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary6 months
  • Verbal LearningPrimary6 months
  • Category FluencyPrimary6 months
  • Task Switching TestPrimary6 months
  • Face-name Memory TaskPrimary6 months
NCT07775833Start2026PhaseNot applicableConditionsDementia and Alzheimer'sParticipants600Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningSecondary2 years
NCT07731334Start2026PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants384Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary12 months
  • Stroop Color-Word TestSecondary12 months
  • Verbal LearningSecondary12 months
  • Verbal FluencySecondary12 months
  • Digit Span TestSecondary12 months
  • Complex Figure Copy and RecallSecondary12 months
  • Corsi Block-Tapping TestSecondary12 months
  • Oddball Target DetectionSecondary
NCT07672977Start2025PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants30Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Verbal LearningOther outcome7 months
  • Digit Span TestOther outcome7 months
  • Short Story RecallOther outcome7 months
  • Symbol Scan TaskOther outcome7 months
  • Word Pair LearningOther outcome7 months
NCT07667478Start2026PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants40Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary6 months
  • Verbal LearningPrimary6 months
  • Digit Span TestPrimary6 months
  • Picture Naming TestPrimary6 months
NCT07651085Start2024PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairment, Parkinson's disease, Sleep and sleep disordersParticipants65Lead sponsorOtherStatusActive, not recruitingLibrary tests named
  • Verbal LearningPrimary
  • Verbal FluencyPrimary
  • Category FluencyPrimary
  • Clock Drawing TaskPrimary
NCT07629349Start2020PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants600Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary6 months
  • Verbal LearningPrimary6 months
  • Digit Span TestPrimary6 months
  • Complex Figure Copy and RecallPrimary6 months
  • Matrix ReasoningPrimary6 months
  • Block Copy TestPrimary6 months
NCT07618481Start2026PhaseNot applicableConditionsDementia and Alzheimer'sParticipants90Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningSecondary6 months
  • Digit Span TestSecondary6 months
  • Task Switching TestSecondary6 months
NCT07611396Start2026PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants160Lead sponsorIndustryStatusRecruitingLibrary tests named
  • Verbal LearningSecondary18 months
NCT07533084Start2026PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairment, Aging, frailty and exerciseParticipants265Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Stroop Color-Word TestSecondary
  • Verbal LearningSecondary
  • Short Story RecallSecondary
NCT07531940Start2026PhasePhase 1ConditionsDementia and Alzheimer'sParticipants25Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Verbal LearningSecondary8 months
  • Paired Associate LearningOther outcome8 months
  • Vocabulary TestOther outcome6 months
  • Pattern Recognition MemoryOther outcome8 months
NCT07459959Start2026PhasePhase 1/2ConditionsDementia and Alzheimer'sParticipants40Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Verbal LearningSecondary9 weeks
NCT07452939Start2026PhaseNot applicableConditionsDementia and Alzheimer's, Delirium, surgery and intensive careParticipants40Lead sponsorOtherStatusRecruitingLibrary tests named
  • Verbal LearningSecondary4 weeks
  • Verbal FluencySecondary4 weeks
  • Symbol CodingSecondary4 weeks
  • Psychomotor Vigilance TaskSecondary4 weeks
  • Short Story RecallSecondary4 weeks
NCT07402356Start2025PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairment, Depression and bipolar disorderParticipants140Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary6 months
  • Verbal LearningSecondary6 months
  • Verbal FluencySecondary6 months
  • N-Back TaskPrimarysame day
  • Category FluencySecondary6 months
  • Picture Naming TestSecondary6 months
NCT07376135Start2026PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants300Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Trail Making TestOther outcome18 months
  • Stroop Color-Word TestOther outcome18 months
  • Verbal LearningOther outcome18 months
  • Digit Span TestOther outcome18 months
  • Symbol CodingOther outcome18 months
  • Short Story RecallOther outcome18 months
  • Complex Figure Copy and RecallOther outcome18 months
NCT07375771Start2025PhaseNot applicableConditionsDementia and Alzheimer'sParticipants40Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary12 weeks
  • Verbal LearningPrimary12 weeks
  • Verbal FluencyPrimary12 weeks
  • Digit Span TestPrimary12 weeks
  • Category FluencyPrimary12 weeks
  • Task Switching TestPrimary12 weeks
  • Clock Drawing TaskPrimary12 weeks
  • Complex Figure Copy and RecallPrimary12 weeks
  • Visual Search TestPrimary12 weeks
NCT07366346Start2026PhaseNot applicableConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants100Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary5 months
  • Verbal LearningPrimary5 months
  • Verbal FluencyPrimary5 months
  • Category FluencyPrimary5 months
NCT07230158Start2025PhaseNot applicableConditionsDementia and Alzheimer'sParticipants160Lead sponsorOtherStatusNot yet recruitingLibrary tests named
  • Trail Making TestSecondary8 weeks
  • Verbal LearningSecondary8 weeks
  • Digit Span TestSecondary8 weeks
  • Picture Naming TestSecondary8 weeks
NCT07214974Start2026PhaseEarly phase 1ConditionsDementia and Alzheimer's, Mild cognitive impairment, Parkinson's diseaseParticipants600Lead sponsorIndustryStatusNot yet recruitingLibrary tests named
  • Trail Making TestSecondary5 years
  • Verbal LearningSecondary5 years
  • Picture Naming TestSecondary5 years
NCT07154511Start2025PhasePhase 1/2ConditionsDementia and Alzheimer's, Parkinson's diseaseParticipants45Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestPrimary14 weeks
  • Verbal LearningPrimary14 weeks
  • Verbal FluencyPrimary14 weeks
  • Line Angle MatchingPrimary14 weeks
NCT07089303Start2025PhaseObservationalConditionsDementia and Alzheimer's, Mild cognitive impairmentParticipants750Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary12 months
  • Stroop Color-Word TestSecondary12 months
  • Verbal LearningSecondary12 months
  • Digit Span TestSecondary12 months
  • Symbol CodingSecondary12 months
  • Picture Naming TestSecondary12 months
  • Clock Drawing TaskSecondary12 months
  • Complex Figure Copy and RecallSecondary12 months
NCT07087951Start2025PhaseNot applicableConditionsDementia and Alzheimer'sParticipants70Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary13 weeks
  • Verbal LearningSecondary13 weeks
  • Verbal FluencySecondary13 weeks
  • Digit Span TestSecondary13 weeks
  • Short Story RecallSecondary13 weeks
  • Complex Figure Copy and RecallSecondary13 weeks
NCT07036328Start2025PhaseNot applicableConditionsDementia and Alzheimer'sParticipants55Lead sponsorOtherStatusRecruitingLibrary tests named
  • Trail Making TestSecondary6 months
  • Stroop Color-Word TestSecondary6 months
  • Verbal LearningSecondary6 months
  • Verbal FluencySecondary6 months
  • Digit Span TestSecondary6 months
  • Category FluencySecondary6 months
  • Task Switching TestSecondary6 months

Page 1 of 9

Questions, answered from the data

How many dementia and Alzheimer's trials use Verbal Learning?

224 registered dementia and Alzheimer's disease studies on ClinicalTrials.gov name it in an outcome measure, 102 of them in a primary outcome: 13% of the condition's 1,673 studies with a cognitive outcome, against 11% of all of them. It is the 3rd most named test in dementia and Alzheimer's trials.

Which tests do dementia and Alzheimer's trials use with Verbal Learning?

The Trail Making Test (99 studies), Verbal Fluency (80 studies) and the Digit Span Test (79 studies).

How many participants do phase 2 dementia and Alzheimer's trials that use Verbal Learning enroll?

Half of the phase 2 studies that name it enroll 70 participants or fewer, and the middle half enroll 41 to 139. 30 of them give a size.

When do dementia and Alzheimer's 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 9 weeks to 12 months. 91 primary outcomes give a duration.

How many completed dementia and Alzheimer's trials that use Verbal Learning have reported results?

73 of the 113 completed studies that name it, 65%, have reported results: 45 posted them on ClinicalTrials.gov, 55 have a results paper linked to the registry record, and 27 did both. The other 40 show neither. Of all completed studies with a cognitive outcome, 46% have reported results.

More on Verbal Learning and dementia and Alzheimer's disease

  • Every cognitive test in dementia and Alzheimer's trials: 1,673 studies
  • Verbal Learning in all clinical trials: 1,832 studies

Verbal Learning in other conditions

  • Cancer235
  • 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
  • Stroke63
  • Parkinson's disease61
  • Healthy volunteers56
  • Delirium, surgery and intensive care51

Other tests in dementia and Alzheimer's trials

  • Trail Making Test273
  • Verbal Fluency248
  • Digit Span Test181
  • Category Fluency167
  • Symbol Coding117
  • Stroop Color-Word Test116
  • Picture Naming Test104
  • Short Story Recall91
  • Selective Reminding Task76
  • Delayed Recall Module71
  • Clock Drawing Task69
  • Complex Figure Copy and Recall53

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.