Mindful Non-reactivity, Anxiety, Depression, and Perceived Stress as Mediators of the Mindfulness Virtual Community Intervention: Pathways to Enhance Mental Health in University Students.

An 8-week online mindfulness and cognitive-behavioral therapy program for students reduced depression, anxiety, and perceived stress while improving quality of life compared to a waitlist control. The intervention's benefits were partly explained by increased mindful non-reactivity—the ability to let thoughts and feelings pass without reacting—which then reduced anxiety and depression, which in turn lowered stress and improved quality of life. Direct effects showed depression scores dropped by 1.65 points, anxiety by 3.29 points, perceived stress by 2.28 points, and quality of life rose by 4.07 points, all statistically significant. The findings highlight mindful non-reactivity as a key mechanism driving improvements.

Study at a glance

Abstract

Mindfulness-based interventions (MBIs) are widely employed in mental health promotion and treatment. Despite widespread evidence of effectiveness with different populations and delivery modes, there are sparse findings concerning the mechanisms of action in MBIs. This study, based on a secondary evaluation of two randomized controlled trials (RCTs) with student participants, was aimed at understanding mediators of the Mindfulness Virtual Community (MVC) intervention, an 8-week, multi-component, online mindfulness and cognitive-behavioral therapy (M-CBT) intervention. Mediation analysis, using structural equation modeling, was used to assess direct and indirect relationships between study group (i.e. intervention versus wait list control) and outcomes. Consistent with the intervention's theoretical perspective and direct effects paths, a model was specified to evaluate whether mindful non-reactivity, as evaluated by the five-factor mindfulness questionnaire, mediated the effect of study group on anxiety and depression (as symptom-driven outcomes), and perceived stress and quality of life (as functional outcomes). The model included additional mediating paths for perceived stress through anxiety and depression, and for quality of life through anxiety, depression, and perceived stress. The model was thereafter extended, adjusting for pre-intervention differences in mindfulness (i.e. observing, describing, activity with awareness, non-judgement, and non-reactivity) facets. Direct (non-mediated) effects indicated statistically significant differences at 8 weeks between the MVC and waitlist control (WLC) groups on depression (-1.65, P=.003), anxiety (-3.29, P<.001), perceived stress (-2.28, P=.001), and quality of life (4.07, P=.003), and the non-reactivity facet of mindfulness (1.55, P=.001) in favor of the MWC intervention. Mediation analysis supported the mediating role of the non-reactivity facet of mindfulness, depression, anxiety and perceived stress through single and sequential mediation paths. Results indicated good fit characteristics for the main (CFI=.988; RMSEA=.052; SRMR=.045) and extended (CFI=.992; RMSEA=.043; SRMR=.036) models. This research underscores the importance of mindful non-reactivity, depression, and anxiety as key mediators of MVC intervention benefits.