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Unresolved Event MemoriesNCT07437092

Facilitating Psychological Closure and Emotional Change Through Mindfulness Meditation

A study testing Mindfulness Meditation and Mind-Wandering Task in people with Unresolved Event Memories and Psychological Closure, run by University of Windsor at 1 site in Canada.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

The goal of this clinical trial is to learn if mindfulness meditation can improve closure and emotion towards unresolved memories in an undergraduate student population. This will be tested through a brief, novel intervention called Mindful Recollection, where participants transition immediately from mindfulness… Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
What is being tested?
Mindfulness Meditation and Mind-Wandering Task
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
220 participants
Where
1 siteCanada
Study dates
Mar 2026to Aug 2027
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Ability to hear and understand spoken instructions clearly; English language proficiency

Who cannot join

  • Trauma history/Dissociative tendencies

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Anas Alsayed Hasan contact

647-224-1595

alsayed4@uwindsor.ca

Canada1 site

  • University of Windsor

    Windsor, Ontario, N9B 3P4

    Anas Alsayed Hasan, 647-224-1595, alsayed4@uwindsor.ca

Other trials in Canada

About this study

Official title: Mindful Recollection: Attending to the Present Before Resolving the Past

The goal of this clinical trial is to learn if mindfulness meditation can improve closure and emotion towards unresolved memories in an undergraduate student population. This will be tested through a brief, novel intervention called Mindful Recollection, where participants transition immediately from mindfulness meditation into the recollection of an unresolved memory. The secondary aim of the study is to investigate the mechanisms of change underlying Mindful Recollection. Overall then, the main questions this study aims to answer are:

  • Does mindful recollection reduce negative emotions associated with unresolved event memories?
  • Can increases in acceptance, decentering, and reappraisal account for the observed effects of mindful recollection on negative emotion?
  • Does mindful recollection facilitate closure towards unresolved event memories?
  • Can increases in acceptance, decentering, and reappraisal account for the observed effects of mindful recollection on closure?
Read more

Researchers will compare the Mindful Recollection intervention to a mind-wandering control task to see if mindfulness meditation uniquely produces positive changes in emotion and closure above and beyond placebo. Mindful Recollection will involve a 13-minute audio-guided mindfulness meditation followed immediately by 2 minutes of memory recollection. The control task will involve 13-minutes of audio-guided mind-wandering followed immediately by 2 minutes of memory recollection.

Participants will:

  • Complete pretest measures of emotion and closure towards an unresolved event memory.
  • Engage in either the Mindful Recollection intervention or the placebo control task after a 24-72 hour delay.
  • Complete post-test measures of emotion and closure towards the same unresolved event memory.
Being tested
Mindfulness Meditation, Mind-Wandering Task
Keywords
Unresolved memories, Psychological closure, Closure, Mindfulness meditation

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Mindfulness MeditationBehavioural

    Mindful Recollection consists of a 15-minute audio-guided task (13 minutes of guided meditation followed immediately by 2 minutes of unresolved event recollection). The 13-minute guided meditation is intended to facilitate a broad mindful awareness by working through sensations of the breath, body, and mind (in that respective order), eventually coming together in a practice of open monitoring - the non-selective observation of any and all aspects of experience. The 2-minute recollection period will have participants transition from meditating to recalling and reflecting on an unresolved memory they identified during the pretest period (approximately 24-72 hours prior).

  • Mind-Wandering TaskBehavioural

    The mind-wandering control task consists of a 15-minute audio-guided task (13 minutes of mind-wandering followed immediately by 2 minutes of unresolved event recollection). Mind-wandering is a common sham mindfulness technique that repeatedly prompts participants to let their thoughts flow freely, thinking about whatever comes to mind. This exposes participants to the same procedure (i.e., listening to a 13-minute audio-recording) without receiving guided mindful meditation instructions. Thus, this condition will guide participants to have a typical mental experience of thinking freely about whatever comes to mind, without developing a mindful awareness of their internal experience.

Study groups in NCT07437092
Study groupRoleWhat they receive
Mindful RecollectionExperimentalNot described
Receives: Behavioral: Mindfulness Meditation
Mind-WanderingSham comparatorNot described
Receives: Behavioral: Mind-Wandering Task

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pre- to Post-Test Changes in Psychological Closure using the Closure and Resolution Scale (CRS)

    Items are rated on a 7-point Likert scale (1 = Completely disagree, 7 = Completely agree), with higher scores reflecting greater levels of closure and resolution.

    Measured: Baseline (24-72 hours prior to the intervention) and post-test (immediately after intervention)

  2. Pre- to Post-Test Changes in Negative Emotion using the Positive and Negative Affect Schedule (PANAS)

    Items are rated on a 5-point Likert scale (1 = Not at all, 5 = Extremely), with higher scores reflecting a stronger endorsement of that emotional experience.

    Measured: Baseline (24-72 hours prior to the intervention) and post-test (immediately after intervention)

Secondary outcomes (3)

  1. Experiential Acceptance Towards Thoughts and Emotions

    Using the acceptance subscale of The Southampton Experiential Avoidance and Acceptance Scale.

    Items are rated on a 7-point Likert scale (1 = Strongly disagree, 7 = Strongly agree), with higher scores indicating greater levels of openness towards internal experience.

    Measured: Immediately after the intervention (post-test)

  2. Reappraisal

    Using the Regulation of Emotion Systems Survey. Items are rated on a 5-point Likert scale (1 = Strongly disagree, 5 = Strongly agree), with higher scores indicating greater engagement in reappraisal during the assigned task.

    Measured: Immediately after the intervention (post-test)

  3. State Decentering

    Using the Metacognitive Processes of Decentering-state scale. Items are rated on an 11-point Likert scale (0 = Not at all, 10 = Very much), with higher scores reflecting greater levels of state decentering (i.e., being aware of, disidentified with, and nonreactive to thoughts and emotions).

    Measured: Immediately after the intervention (post-test)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Feb 2026
  2. Study startMar 2026 (estimated)
  3. Primary completionAug 2027 (estimated)
  4. Study completionAug 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
220 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07437092
Sponsor's protocol ID
REB #25-135
Status last verified
Feb 2026
First submitted
20 Feb 2026
Last updated
2 Mar 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Luchetti M, Sutin AR. Measuring the phenomenology of autobiographical memory: A short form of the Memory Experiences Questionnaire. Memory. 2016;24(5):592-602. doi: 10.1080/09658211.2015.1031679. Epub 2015 Apr 20.

    PubMed 25894806

  • De France, K., & Hollenstein, T. (2017). Assessing emotion regulation repertoires: The Regulation of Emotion Systems Survey. Personality and Individual Differences, 119, 204-215. https://doi.org/10.1016/j.paid.2017.07.018

  • McAndrews, Z., Hart, C. M., & Stopa, L. (2024). Development of the Southampton Experiential Avoidance and Acceptance Scale (SEAAS). Journal of Contextual Behavioral Science, 33, 100822-. https://doi.org/10.1016/j.jcbs.2024.100822

  • Tanay G, Bernstein A. State Mindfulness Scale (SMS): development and initial validation. Psychol Assess. 2013 Dec;25(4):1286-99. doi: 10.1037/a0034044. Epub 2013 Sep 23.

    PubMed 24059475

  • Watson D, Clark LA, Tellegen A. Development and validation of brief measures of positive and negative affect: the PANAS scales. J Pers Soc Psychol. 1988 Jun;54(6):1063-70. doi: 10.1037//0022-3514.54.6.1063.

    PubMed 3397865

  • Hanley AW, Bernstein A, Nakamura Y, Hadash Y, Rojas J, Tennant KE, Jensen RL, Garland EL. The Metacognitive Processes of Decentering Scale: Development and initial validation of trait and state versions. Psychol Assess. 2020 Oct;32(10):956-971. doi: 10.1037/pas0000931. Epub 2020 Jul 23.

    PubMed 32700920

  • Boucher CM, Scoboria A, Soucie K, Pascual-Leone A. Development and validation of the Closure and Resolution Scale (CRS). Memory. 2025 Feb;33(2):205-222. doi: 10.1080/09658211.2024.2427666. Epub 2024 Nov 19.

    PubMed 39561135

Questions about this trial

What is this clinical trial studying?

A study testing Mindfulness Meditation and Mind-Wandering Task in people with Unresolved Event Memories and Psychological Closure, run by University of Windsor at 1 site in Canada.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 2 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Anas Alsayed Hasan (647-224-1595, alsayed4@uwindsor.ca), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pre- to Post-Test Changes in Psychological Closure using the Closure and Resolution Scale (CRS) (time frame: Baseline (24-72 hours prior to the intervention) and post-test (immediately after intervention)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07437092, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Mar 2026.

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