NCT05608304

Brief Summary

The present study will use a randomized controlled design to investigate group differences between students with and without a history of nonsuicidal self-injury (NSSI) in response to a single-session mindfulness induction across conditions (formal mindfulness induction, informal mindfulness induction, active control task) in terms of the intervention's acceptability and effectiveness. Effectiveness will be inferred via pre-post changes in state mindfulness, state stress, and state well-being.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
254

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Nov 2022

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 6, 2022

Completed
1 month until next milestone

First Posted

Study publicly available on registry

November 8, 2022

Completed
Same day until next milestone

Study Start

First participant enrolled

November 8, 2022

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 16, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 16, 2023

Completed
Last Updated

May 6, 2025

Status Verified

May 1, 2025

Enrollment Period

6 months

First QC Date

October 6, 2022

Last Update Submit

May 1, 2025

Conditions

Keywords

Nonsuicidal Self-injuryMindfulnessStressWell-BeingUniversity Students

Outcome Measures

Primary Outcomes (1)

  • Change in state mindfulness (as measured by the VAS)

    A Visual Analogue Scale (VAS), an instrument commonly used in induction research (e.g., Hessler-Kaufmann et al., 2020), will also be used to assess the momentary experience of five mindfulness facets, as generally described by Baer et al. (2006). Specifically, there will be five researcher-developed VAS items (one for each facet of mindfulness), modelled on the items in the Five Facets of Mindfulness Questionnaire (FFMQ; Baer et al., 2006). Each VAS will consist of a small, unmarked ruler with anchors labeled as "0 = Not true at all" and "10 = Completely true." Instructions will read: "Please indicate the extent to which each statement below accurately reflects your experience in this moment on the corresponding ruler below by dragging the slider," for each of the five facets of mindfulness. Each scale will yield a single subjective state mindfulness facet score from 0 to 10, where a higher VAS score indicates greater state mindfulness (on that facet).

    Pre-post intervention (10-minute interval)

Secondary Outcomes (6)

  • Change in state mindfulness (as measured by the FFMQ-24)

    Pre-post intervention (10-minute interval)

  • Change in state stress (as measured by the VAS)

    Pre-post intervention (10-minute interval)

  • Change in state stress (as measured by the PSM-9)

    Pre-post intervention (10-minute interval)

  • Change in well-being (as measured by the VAS)

    Pre-post intervention (10-minute interval)

  • Acceptability (as measured by the TFA questionnaire)

    Post-intervention only (5 minutes)

  • +1 more secondary outcomes

Study Arms (3)

Formal mindfulness induction

EXPERIMENTAL
Behavioral: Formal mindfulness induction

Informal mindfulness induction

EXPERIMENTAL
Behavioral: Informal mindfulness induction

Active control task

ACTIVE COMPARATOR
Behavioral: Active control task

Interventions

The formal mindfulness induction will consist of a 10-minute audio recording of a sitting meditation, guiding the participant to consciously and repeatedly bring their attention to their breath and inner experience with nonjudgmental acceptance.

Formal mindfulness induction

The informal mindfulness induction will consist of on-screen instructions guiding participants through the completion of four routine tasks (washing hands, drinking water, laying down, listening to music) with mindful awareness and acceptance over the course of 10 minutes.

Informal mindfulness induction

Participants assigned to the active control condition will be prompted to download a single-page document containing 100 letters, numbers, and symbols, and a grid of 100 boxes. Following along with a guided audio, participants will be instructed to place all of the characters in the grid in a specific order over the course of 10 minutes. A version of this task has been used in previous studies by our team (Carsley \& Heath, 2019; Petrovic et al., 2022) and has been shown not to impact mindfulness levels, and was thus deemed an appropriate neutral attention task for this study.

Active control task

Eligibility Criteria

Age18 Years - 29 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Current student at the host institution
  • years old
  • Either a history of engaging in NSSI on at least 5 separate days in the last year or no history of ever having engaged in NSSI

You may not qualify if:

  • \- Having a history of NSSI that does not fulfill the recency/frequency requirement

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

McGill University

Montreal, Quebec, H3A 0G4, Canada

Location

MeSH Terms

Conditions

Self-Injurious Behavior

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehavior

Study Officials

  • Nancy L. Heath, Ph.D.

    McGill University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Distinguished James McGill Professor

Study Record Dates

First Submitted

October 6, 2022

First Posted

November 8, 2022

Study Start

November 8, 2022

Primary Completion

May 16, 2023

Study Completion

May 16, 2023

Last Updated

May 6, 2025

Record last verified: 2025-05

Data Sharing

IPD Sharing
Will share
Shared Documents
STUDY PROTOCOL, SAP
More information

Locations