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Gepubliceerd in: Mindfulness 3/2023

04-02-2023 | ORIGINAL PAPER

A Randomized Controlled Trial of an Online Self-Help Mindfulness Intervention for Emotional Distress: Serial Mediating Effects of Mindfulness and Experiential Avoidance

Auteurs: Yanjuan Li, Angelica Jiaqi Zhang, Yuhan Meng, Stefan G. Hofmann, Ashley Y. Zhou, Xinghua Liu

Gepubliceerd in: Mindfulness | Uitgave 3/2023

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Abstract

Objectives

Internet-based self-help Mindfulness Intervention for Emotional Distress (iMIED) program is a newly developed program targeting essential transdiagnostic factors underlying emotional distress, the effects of which have gained initial support in sub-clinical samples. The current study investigated its effects on the underlying mechanisms by examining mindfulness and experiential avoidance as putative mediators.

Method

Patients with emotional disorders were recruited online. After interviews, 75 patients were randomly allocated to either iMIED (= 37) including treatment as usual (TAU) or TAU-only control group (n = 38). Mindfulness, experiential avoidance, and emotional distress (i.e., anxiety, depression, and general emotional distress) were measured before (T0) and after the intervention (T8). During the intervention period, mindfulness was measured weekly (T1–T7); experiential avoidance was measured at Week 2 (T2) and Week 5 (T5).

Results

Intention-to-treat 2 × 2 repeated-measures ANOVAs showed that, compared with the TAU-only group, mindfulness, experiential avoidance, and emotional distress significantly improved in the iMIED + TAU group (Cohen’s d = 0.53–0.79). Latent growth curve analyses showed that more than half of the improvement in mindfulness and experiential avoidance occurred at T3 and T5, respectively. Serial mediation analyses found that mindfulness at T3 and experiential avoidance at T5 sequentially mediated the effects of the iMIED program on emotional distress.

Conclusions

The current study, using a randomized controlled trial with multiple time-point measurements, demonstrated that the iMIED program offers a scalable approach for the management of emotional distress by increasing mindfulness and decreasing experiential avoidance.

Preregistration

The current study was preregistered in the Chinese Clinical Trial Registry (http://​www.​chictr.​org.​cn/​, Registration number: ChiCTR2100044480).
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Metagegevens
Titel
A Randomized Controlled Trial of an Online Self-Help Mindfulness Intervention for Emotional Distress: Serial Mediating Effects of Mindfulness and Experiential Avoidance
Auteurs
Yanjuan Li
Angelica Jiaqi Zhang
Yuhan Meng
Stefan G. Hofmann
Ashley Y. Zhou
Xinghua Liu
Publicatiedatum
04-02-2023
Uitgeverij
Springer US
Gepubliceerd in
Mindfulness / Uitgave 3/2023
Print ISSN: 1868-8527
Elektronisch ISSN: 1868-8535
DOI
https://doi.org/10.1007/s12671-023-02083-x

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