The Role of Attentional Control in Mindfulness Intervention for Emotional Distress: A Randomized Controlled Trial With Longitudinal Mediation Analyses.
Study Goal
The researchers aimed to determine whether attentional control mediates the effects of mindfulness-based interventions on emotional distress.
Results Summary
The study found that the mindfulness intervention significantly improved attentional control and reduced anxiety and depression levels, with effects becoming evident by Week 3. Attentional control mediated the intervention's effects on emotional distress at multiple time points.
Population
498 participants with high emotional distress recruited online.
Effective Dosage
Not specified
Duration
49 days
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
Mindfulness Intervention for Emotional Distress (MIED) programme | increase | attentional control | participants with high emotional distress | - | significant increase | #1 |
Mindfulness Intervention for Emotional Distress (MIED) programme | decrease | anxiety levels | participants with high emotional distress | - | decrease | #2 |
Mindfulness Intervention for Emotional Distress (MIED) programme | decrease | depression levels | participants with high emotional distress | - | decrease | #3 |
Mindfulness Intervention for Emotional Distress (MIED) programme | decrease | emotional distress | participants with high emotional distress | - | alleviate | #4 |
OBJECTIVE: This study aimed to investigate whether attentional control serves as a mediator for mindfulness-based interventions for emotional distress, utilizing a randomized waitlist (WL)-controlled design. METHODS: A total of 498 participants with high emotional distress was recruited online and randomly assigned to a 49-day online Mindfulness Intervention for Emotional Distress (MIED) group (N = 249) or a WL control group (N = 249). Levels of attentional control, anxiety and depression were assessed at baseline (T0), Week 3 (T3), Week 5 (T5) and Week 7 (postintervention, T7). RESULTS: Linear mixed models revealed significant Group-by-Time interaction effects for attentional control (p < 0.001), anxiety (p < 0.001) and depression (p < 0.05). Latent growth curve analyses demonstrated a significant increase in attentional control and a decrease in anxiety and depression levels during the MIED programme. These changes becoming evident starting Week 3. Longitudinal mediation analyses revealed that the slope of attentional control significantly mediated the effects of the MIED programme on the slope of anxiety and depression levels. Further, attentional control level at Week 3 significantly mediates the effect of MIED programme on anxiety and depression levels at Weeks 5 and 7. Similarly, attentional control level at Week 5 significantly mediates the MIED programme's effects on anxiety and depression levels at Week 7. CONCLUSIONS: The present trial provides evidence suggesting that mindfulness interventions may alleviate emotional distress through the enhancement of attentional control. TRIAL REGISTRATION: Chinese Clinical Trial Registry number: ChiCTR2200064140.