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Presentation Master's thesis - Carolien de Bruin - Clinical Psychology

Last modified on 07-09-2022
The Effectiveness of a Low Dose Mindfulness-Based Intervention on Mental Health in the General Population: Exploring Mechanism and Expectations
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Start date
16-09-2022 10:00
End date
16-09-2022 11:00

Roeterseilandcampus - Building G

Nieuwe Achtergracht 129-B


Mindfulness-based Interventions (MBIs) have shown promising results in improving mental health in the general population. However, common MBIs include a high dose of practicing, which makes them time-consuming and labour-intensive. This study aimed to (1) test the effectiveness of a low dose MBI on mental distress and emotion regulation in the general population, (2) test Monitoring and Acceptance Theory (MAT) as a mechanism by assessing the mediating role of attention monitoring and acceptance, and (3) asses the relationship between treatment expectations and outcomes. In a quasi-experimental design, pre- to posttreatment change scores of mindfulness (FFMQ), mental distress (SCL-90-R GSI), and emotion dysregulation (DERS) were compared between a self-selected and self-paid MBI group (n = 106) and nonactive control group (n = 118). Participants in the MBI group demonstrated a significantly larger increase in mindfulness and a larger decrease in mental distress, but not emotion dysregulation, compared to the control group. In accordance with MAT, acceptance (FFMQ Nonjudging) partially mediated the effect of the MBI on mental distress, whereas attention monitoring (FFMQ Observing) did not. The exploratory correlation analysis revealed no significant relationship between expectations and outcomes. It can be concluded that the low dose MBI is effective in improving mental distress, but not emotion regulation. The moderate effect on mental distress (d = -0.78) is comparable to established MBIs. This study furthers our understanding of dosage in MBIs, MAT as a mechanism, and the role of expectations.