Objectives
Rumination is a transdiagnostic risk factor for the development and maintenance of psychological distress. Mindfulness, defined as nonjudgmental regulation of attention to the present moment, is effective at reducing rumination. However, the exact mechanisms through which mindfulness reduces rumination are not well understood. This study aimed to explore whether attention control mediated the effect of a brief, app-based mindfulness intervention on reductions in rumination.
Method
We randomly assigned 77 college students with high levels of rumination to a brief, 2-week mindfulness intervention or an active control intervention. Participants completed self-report measures of mindfulness (specifically nonjudgment), rumination, and two attention control tasks (antisaccade and emotional go/no-go) at pre- and post-intervention.
Results
Our results showed a significant reduction in rumination and a significant increase in mindfulness scores from pre- to post-intervention across both groups. There was also a significant Time × Condition interaction for emotional go/no-go commission errors such that the mindfulness group experienced a decrease in commission errors (i.e., an improvement in attention control) while the control group experienced no change. Lastly, accuracy scores from the antisaccade task increased from pre- to post-intervention across both conditions.
Conclusions
Results revealed that the brief mindfulness intervention improved attention control via the emotional go/no-go task, relative to the control condition. Surprisingly, both groups showed improvements in mindfulness, rumination, and antisaccade accuracy scores. These findings add to past research showing that mindfulness interventions improve certain aspects of attention control. Future work is needed to delineate the role of attention control in mindfulness interventions and how this relationship impacts psychological distress.
Preregistration
This study was a Phase 1 clinical trial and not preregistered.