Universal Informatics · Research reading room

Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.

Walsh KM, Saab BJ, Farb NA. · JMIR mental health · 2019 · Randomized controlled trial report · double blinding not verified

Original publication · Original publication · Original publication · Original publication · Original publication

Recorded summary

Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.

Recorded limitations

Short follow-up, mostly female Apple-device users and developer-linked app; three weeks is not evidence of durable effects.

Evidence and provenance

Chapter Trust Factor uses a minimum of three distinct qualifying studies. Publication records retain their own evidence and assessment.

Study design and assessment
design
Randomized controlled trial report · double blinding not verified
assessment
category
rct-masking-unclear
is Randomized Controlled Trial
true
peer Reviewed
true
basis
Active-controlled RCT
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
sources

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

review Scope
selected-methods
trust Factor
score
2
display Crosses
2
scope
Paper
status
assessed
rating Scale
library-trust-factor/1-3
randomized Controlled Trial
true
peer Reviewed
true
blinding
not-confirmed
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
basis
Active-controlled RCT
sources

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

assessed At
2026-11-02
review Scope
selected-methods
human Approval
false
review Limit
AI source-based design assessment; human content sign-off is recorded separately.
jadad
status
unassessed
score
Not recorded
evidence
evidence Type
Randomized controlled trial report · double blinding not verified
intervention
Wildflowers mindfulness versus 2048 cognitive game, at least ten minutes daily for three weeks
provider
Not separately established; clinician/teacher/app details, if known, are retained in the intervention description
comparator
See design/intervention description; otherwise unknown
sample
86 final participants
population
age
18+; group means 19.78 and 20.24
age Fit
mixed-overlap
sample
86 final participants
setting
Not separately established; see population/intervention description
community
Not assigned
measurement
Specific outcomes are reported in the finding and retained appraisal.
trial Id
publication-30622094
trial Registries

NCT03783793

registry Scope
Identifiers explicitly reported in article abstract; other registrations remain unverified
relationship Note
Measure immediate experience separately from lasting change and provide access beyond expensive devices. Component evidence does not establish efficacy of the combined Universal Mind lab model.
measured Genes
None recorded
pathways
None recorded
quality
tier
qualified
qualification
Qualified for the stated design-specific use in a rapid methods-based review, not necessarily low risk of bias or high certainty.
formal Risk Of Bias Tool Applied
false
jadad Score
Not recorded
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
harms And Attrition
Not systematically extracted beyond findings/limitations; absence of reporting is not evidence of no harm
source Access
scope
selected-methods
full Text Cached
true
methods Inspected
true
full Text Appraisal Claim
false
level
selected-methods
source URLs

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

retrieved At
2026-11-02
Topics and recorded topic scores
  1. key
    language:universal-mind-mobile-lab
    title
    Universal Mind Mobile Lab · Direct response and inspired by
    collection
    language
    trust Score
    3
  2. key
    language:mindfulness-youth
    title
    Mindfulness for youth
    collection
    language
    trust Score
    2
  3. key
    language:youth-access-connection
    title
    Youth access, digital support and connection
    collection
    language
    trust Score
    3
Citation snapshot and identifiers
id
youth-pmid-30622094
doi
10.2196/10844
pmid
30622094
citation Snapshot
count
Not recorded
source
Not recorded
retrieved At
Not recorded
status
not-assessed
citations By Collection
language
Not recorded
Complete approved library record
lab Relevance
relationship
inspired-by
implication
Measure immediate experience separately from lasting change and provide access beyond expensive devices.
transfer Limit
Component evidence does not establish efficacy of the combined Universal Mind lab model.
institutions
None recorded
institution Evidence
None recorded
research Topics

Mindfulness · Youth needs / digital / access

publication Status
pmid
30622094
checked At
2026-11-02T01:32:42.281099+00:00
pub Types

research-article · Journal Article

indexed Notices
None recorded
crossref Updates
None recorded
notice Records
None recorded
scope
Europe PMC indexed publication types/linked notices, publisher JATS related articles and Crossref update-to metadata; absence is not a guarantee of no notice.
notice Summary
Indexed related notices are retained below; no retraction identified in this bounded metadata check. This is not an exhaustive guarantee.
randomized Study Unit Id
publication-30622094
publication Approval
status
approved-for-publication
approved By
Ben Korbel
approved At
2026-11-02
assessment
AI assessed; human approved for publication
scope
Approved research summaries for Informatics staging. No clinical peer review, treatment recommendation, partner endorsement or production release is claimed.
source Revision
r1-83b50ce8e3ce
source Content Hash
83b50ce8e3cecca0cd2260a896f1dea466f64bdaa09911ccd3475f77367d9f1f
source Access
scope
selected-methods
full Text Cached
true
methods Inspected
true
full Text Appraisal Claim
false
level
selected-methods
source URLs

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

retrieved At
2026-11-02
study Family Id
publication-30622094
approaches

Mindfulness · Youth needs / digital / access

id
youth-pmid-30622094
aliases
None recorded
title
Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.
journal
JMIR mental health
neurotransmitters
None recorded
year
2019
authors
Walsh KM, Saab BJ, Farb NA.
design
Randomized controlled trial report · double blinding not verified
kind
Journal article
identity Conflict
Not recorded
doi
10.2196/10844
pmid
30622094
urls

https://doi.org/10.2196/10844 · https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

collections

language

categories

Clinical & self-report

targets
None recorded
priority
1
quotes
None recorded
summary
Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
limitation
Short follow-up, mostly female Apple-device users and developer-linked app; three weeks is not evidence of durable effects.
citation Count
Not recorded
citation Snapshot
count
Not recorded
source
Not recorded
retrieved At
Not recorded
status
not-assessed
study Design Assessment
category
rct-masking-unclear
is Randomized Controlled Trial
true
peer Reviewed
true
basis
Active-controlled RCT
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
sources

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

review Scope
selected-methods
paper Trust Assessment
score
2
display Crosses
2
scope
Paper
status
assessed
rating Scale
library-trust-factor/1-3
randomized Controlled Trial
true
peer Reviewed
true
blinding
not-confirmed
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
basis
Active-controlled RCT
sources

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

assessed At
2026-11-02
review Scope
selected-methods
human Approval
false
review Limit
AI source-based design assessment; human content sign-off is recorded separately.
citations By Collection
language
Not recorded
topics
  1. key
    language:universal-mind-mobile-lab
    title
    Universal Mind Mobile Lab · Direct response and inspired by
    collection
    language
    trust Score
    3
  2. key
    language:mindfulness-youth
    title
    Mindfulness for youth
    collection
    language
    trust Score
    2
  3. key
    language:youth-access-connection
    title
    Youth access, digital support and connection
    collection
    language
    trust Score
    3
journal Key
jmirmentalhealth
journal Label
JMIR mental health
chapter Entries
  1. id
    language-universal-mind-mobile-lab-youth-pmid-30622094
    aliases
    None recorded
    title
    Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.
    authors
    Walsh KM, Saab BJ, Farb NA.
    year
    2019
    journal
    JMIR mental health
    doi
    10.2196/10844
    pmid
    30622094
    urls

    https://doi.org/10.2196/10844 · https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

    collections

    language

    categories

    Clinical & self-report

    targets
    None recorded
    neurotransmitters
    None recorded
    conditions

    stress

    condition Evidence
    1. id
      stress
      evidence
      1. field
        findings
        text
        Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
        matched Text
        stress
      scope
      Studied topic or reported outcome, including null findings; no diagnosis, benefit or subgroup membership is inferred.
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    The existing youth filter includes adolescents and source-defined young people. It does not establish a separate 16–24 estimate.
    age Fit
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    source URL
    https://pubmed.ncbi.nlm.nih.gov/30622094/
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    selected-methods-ai-editorial-assessment
    classification Note
    Broad groups describe source-reported populations or review scope. Eligibility and study mean ages are not observed participant ranges; read the reported-age wording.
    community Matches
    None recorded
    kind
    Journal article
    design
    Randomized controlled trial report · double blinding not verified
    origin
    approved-youth-20261102
    priority
    1
    quotes
    None recorded
    finding
    Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
    summary
    Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
    limitation
    Short follow-up, mostly female Apple-device users and developer-linked app; three weeks is not evidence of durable effects.
    evidence
    evidence Type
    Randomized controlled trial report · double blinding not verified
    intervention
    Wildflowers mindfulness versus 2048 cognitive game, at least ten minutes daily for three weeks
    provider
    Not separately established; clinician/teacher/app details, if known, are retained in the intervention description
    comparator
    See design/intervention description; otherwise unknown
    sample
    86 final participants
    population
    age
    18+; group means 19.78 and 20.24
    age Fit
    mixed-overlap
    sample
    86 final participants
    setting
    Not separately established; see population/intervention description
    community
    Not assigned
    measurement
    Specific outcomes are reported in the finding and retained appraisal.
    trial Id
    publication-30622094
    trial Registries

    NCT03783793

    registry Scope
    Identifiers explicitly reported in article abstract; other registrations remain unverified
    relationship Note
    Measure immediate experience separately from lasting change and provide access beyond expensive devices. Component evidence does not establish efficacy of the combined Universal Mind lab model.
    measured Genes
    None recorded
    pathways
    None recorded
    quality
    tier
    qualified
    qualification
    Qualified for the stated design-specific use in a rapid methods-based review, not necessarily low risk of bias or high certainty.
    formal Risk Of Bias Tool Applied
    false
    jadad Score
    Not recorded
    masking Roles
    Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
    harms And Attrition
    Not systematically extracted beyond findings/limitations; absence of reporting is not evidence of no harm
    source Access
    scope
    selected-methods
    full Text Cached
    true
    methods Inspected
    true
    full Text Appraisal Claim
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    selected-methods
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    https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

    retrieved At
    2026-11-02
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    category
    rct-masking-unclear
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    true
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    basis
    Active-controlled RCT
    masking Roles
    Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
    sources

    https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

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    Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
    basis
    Active-controlled RCT
    sources

    https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

    assessed At
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    review Limit
    AI source-based design assessment; human content sign-off is recorded separately.
    jadad
    status
    unassessed
    score
    Not recorded
    citation Count
    Not recorded
    citation Snapshot
    count
    Not recorded
    source
    Not recorded
    retrieved At
    Not recorded
    status
    not-assessed
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    approved-for-publication
    approved By
    Ben Korbel
    approved At
    2026-11-02
    assessment
    AI assessed; human approved for publication
    scope
    Approved research summaries for Informatics staging. No clinical peer review, treatment recommendation, partner endorsement or production release is claimed.
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    retrieved At
    2026-11-02
    study Family Id
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    randomized Study Unit Id
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    institutions
    None recorded
    institution Evidence
    None recorded
    research Topics

    Mindfulness · Youth needs / digital / access

    lab Relevance
    relationship
    inspired-by
    implication
    Measure immediate experience separately from lasting change and provide access beyond expensive devices.
    transfer Limit
    Component evidence does not establish efficacy of the combined Universal Mind lab model.
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    pmid
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    checked At
    2026-11-02T01:32:42.281099+00:00
    pub Types

    research-article · Journal Article

    indexed Notices
    None recorded
    crossref Updates
    None recorded
    notice Records
    None recorded
    scope
    Europe PMC indexed publication types/linked notices, publisher JATS related articles and Crossref update-to metadata; absence is not a guarantee of no notice.
    notice Summary
    Indexed related notices are retained below; no retraction identified in this bounded metadata check. This is not an exhaustive guarantee.
    approaches

    Mindfulness · Youth needs / digital / access

    record Id
    youth-pmid-30622094
    source Pages
    None recorded
    assessment Record
    id
    youth-pmid-30622094
    title
    Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.
    authors
    Walsh KM, Saab BJ, Farb NA.
    year
    2019
    journal
    JMIR mental health
    doi
    10.2196/10844
    pmid
    30622094
    pmcid
    PMC6329416
    trial Registries

    NCT03783793

    registry Scope
    Identifiers explicitly reported in article abstract; other registrations remain unverified
    collection
    youth-20261102
    topics

    Mindfulness · Youth needs / digital / access

    institutions
    None recorded
    institution Evidence
    None recorded
    publication Type

    research-article · Journal Article

    study Family Id
    publication-30622094
    randomized Study Unit Id
    publication-30622094
    existing Repository Matches
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    population
    age
    18+; group means 19.78 and 20.24
    age Fit
    mixed-overlap
    sample
    86 final participants
    setting
    Not separately established; see population/intervention description
    community
    Not assigned
    intervention
    description And Dose
    Wildflowers mindfulness versus 2048 cognitive game, at least ten minutes daily for three weeks
    provider
    Not separately established; clinician/teacher/app details, if known, are retained in the intervention description
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    See design/intervention description; otherwise unknown
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    proposed Crosses
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    approved Crosses
    Not recorded
    findings
    Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
    limitations
    Short follow-up, mostly female Apple-device users and developer-linked app; three weeks is not evidence of durable effects.
    harms And Attrition
    Not systematically extracted beyond findings/limitations; absence of reporting is not evidence of no harm
    lab Relevance
    relationship
    inspired-by
    implication
    Measure immediate experience separately from lasting change and provide access beyond expensive devices.
    transfer Limit
    Component evidence does not establish efficacy of the combined Universal Mind lab model.
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    selected-methods
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    pub Types

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    indexed Notices
    None recorded
    crossref Updates
    None recorded
    notice Records
    None recorded
    scope
    Europe PMC indexed publication types/linked notices, publisher JATS related articles and Crossref update-to metadata; absence is not a guarantee of no notice.
    notice Summary
    Indexed related notices are retained below; no retraction identified in this bounded metadata check. This is not an exhaustive guarantee.
    quality
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    Not recorded
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    Not recorded
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    Not recorded
    decision Scope
    Ben reviews proposed content and release; full medical-paper reading is not required.
    provenance
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    topic Id
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    topic Title
    Universal Mind Mobile Lab · Direct response and inspired by
    trust Score
    3
  2. id
    language-mindfulness-youth-youth-pmid-30622094
    aliases
    None recorded
    title
    Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.
    authors
    Walsh KM, Saab BJ, Farb NA.
    year
    2019
    journal
    JMIR mental health
    doi
    10.2196/10844
    pmid
    30622094
    urls

    https://doi.org/10.2196/10844 · https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

    collections

    language

    categories

    Clinical & self-report

    targets
    None recorded
    neurotransmitters
    None recorded
    conditions

    stress

    condition Evidence
    1. id
      stress
      evidence
      1. field
        findings
        text
        Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
        matched Text
        stress
      scope
      Studied topic or reported outcome, including null findings; no diagnosis, benefit or subgroup membership is inferred.
    age Groups

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    record Id
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    language

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    youth · adults

    reported Ages
    18+; group means 19.78 and 20.24
    youth Scope
    included
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    The existing youth filter includes adolescents and source-defined young people. It does not establish a separate 16–24 estimate.
    age Fit
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    Effects of a Mindfulness Meditation App on Subjective Well-Being: Active Randomized Controlled Trial and Experience Sampling Study.
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    2019
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    decision Scope
    Ben reviews proposed content and release; full medical-paper reading is not required.
    provenance
    Discovered and appraised by AI; pending human content sign-off
    production Eligible
    false
    approved Retrieval Eligible
    false
    selected Corpus References
    None recorded
    reference Scope
    Explicit publisher reference identifiers; citation is not proof of inclusion in a meta-analysis.
    content Hash
    83b50ce8e3cecca0cd2260a896f1dea466f64bdaa09911ccd3475f77367d9f1f
    revision
    r1-83b50ce8e3ce
    archive Entries
    None recorded
    collection
    language
    chapter Number
    6
    topic Id
    youth-access-connection
    topic Title
    Youth access, digital support and connection
    trust Score
    3
evidence
evidence Type
Randomized controlled trial report · double blinding not verified
intervention
Wildflowers mindfulness versus 2048 cognitive game, at least ten minutes daily for three weeks
provider
Not separately established; clinician/teacher/app details, if known, are retained in the intervention description
comparator
See design/intervention description; otherwise unknown
sample
86 final participants
population
age
18+; group means 19.78 and 20.24
age Fit
mixed-overlap
sample
86 final participants
setting
Not separately established; see population/intervention description
community
Not assigned
measurement
Specific outcomes are reported in the finding and retained appraisal.
trial Id
publication-30622094
trial Registries

NCT03783793

registry Scope
Identifiers explicitly reported in article abstract; other registrations remain unverified
relationship Note
Measure immediate experience separately from lasting change and provide access beyond expensive devices. Component evidence does not establish efficacy of the combined Universal Mind lab model.
measured Genes
None recorded
pathways
None recorded
quality
tier
qualified
qualification
Qualified for the stated design-specific use in a rapid methods-based review, not necessarily low risk of bias or high certainty.
formal Risk Of Bias Tool Applied
false
jadad Score
Not recorded
masking Roles
Allocation unknown before baseline; both apps framed as cognitive training. Continued participant or assessor masking not established.
harms And Attrition
Not systematically extracted beyond findings/limitations; absence of reporting is not evidence of no harm
source Access
scope
selected-methods
full Text Cached
true
methods Inspected
true
full Text Appraisal Claim
false
level
selected-methods
source URLs

https://pubmed.ncbi.nlm.nih.gov/30622094/ · https://doi.org/10.2196/10844 · https://pmc.ncbi.nlm.nih.gov/articles/PMC6329416/ · https://www.ebi.ac.uk/europepmc/webservices/rest/PMC6329416/fullTextXML · https://api.crossref.org/works/10.2196%2F10844

retrieved At
2026-11-02
jadad
status
unassessed
score
Not recorded
condition Evidence
  1. id
    stress
    evidence
    1. field
      findings
      text
      Small immediate mood/stress benefits and improved attentional control favoured mindfulness; acceptance and awareness also improved in controls.
      matched Text
      stress
    scope
    Studied topic or reported outcome, including null findings; no diagnosis, benefit or subgroup membership is inferred.
conditions

stress

topic Trust Scores

3 · 2

full Text
status
not-indexed
retrieval Available
false

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