The impact of mindfulness-based interventions on adolescent social anxiety: A randomized controlled trial.

Project Abstract

This randomized controlled trial investigates the efficacy of mindfulness-based interventions (MBIs) in reducing social anxiety symptoms among adolescents aged 13–17, comparing an eight-week MBI program to an active control condition (health education) and a waitlist control. A total of 312 participants were recruited from middle and high schools across three urban districts and randomly assigned to one of the three arms (MBI, health education, waitlist). Primary outcomes included changes in social anxiety symptomatology measured by the Social Phobia Inventory (SPIN) and the Liebowitz Social Anxiety Scale for Children and Adolescents (LSAS-CA) at post-intervention and three-month follow-up. Secondary outcomes encompassed mindfulness abilities (Five Facet Mindfulness Questionnaire for Adolescents, FFMQ-A), rumination (Ruminative Thought Style Questionnaire for Adolescents), anxiety sensitivity (Children’s Anxiety Sensitivity Index), and functional impairment (SDS-Parent and SDS-Child versions). The study also examined potential mediators such as present-moment awareness, nonjudgmental acceptance, and cognitive reappraisal, and moderators including gender, baseline symptom severity, and trait anxiety. Participants in the MBIsOperated group engaged in an 8-week, 90-minute session format combining mindfulness meditation, mindful movement, and psychoeducational components tailored to adolescents, with weekly home practice supported by digital reminders and guided audio exercises. Facilitators emphasized experiential learning, peer support, and culturally sensitive materials. The active control condition delivered equal contact time through health education sessions focusing on nutrition, sleep, physical activity, and study skills, without mindfulness components. The waitlist group received the MBI after the study period. Analyses employed hierarchical linear modeling to assess changes over time, with intent-to-treat principles and multiple imputation for missing data. Effect sizes were calculated using Cohen’s d for between-group differences at post-test and follow-up. Preliminary results indicate a significant reduction in SPIN and LSAS-CA scores in the MBIs group compared with both control groups at post-intervention, with medium-to-large effect sizes (d = 0.45–0.72). These effects persisted at the three-month follow-up, albeit with slight attenuation (d = 0.30–0.55). Secondary outcomes showed improved mindfulness (FFMQ-A) and reduced cognitive rumination in MBIs participants, along with enhancements in social functioning as reported by both adolescents and parents. Mediation analyses revealed that increases in present-moment attention and nonjudgmental acceptance partially mediated reductions in social anxiety symptoms, accounting for approximately 28% of the total effect. Moderation analyses suggested greater benefits for participants with higher baseline social anxiety and for females, though interactions were small-to-moderate. Adverse events were rare and comparable across groups, with no reports of increased distress or disengagement due to participation. Adherence to home practice correlated positively with symptom improvement, underscoring the dose–response potential of MBIs. The findings support the utility of school-based MBIs as an evidence-based, scalable approach to reducing adolescent social anxiety by enhancing mindfulness capacities and altering cognitive processing of social evaluative cues. Limitations include reliance on self-reported measures and potential cultural variability in mindfulness receptivity, suggesting the need for further cross-cultural replication and longer-term follow-up. The study contributes to the literature by delineating mechanisms of change and confirming that MBIs can yield durable benefits in adolescent social anxiety within real-world educational settings.

Project Overview

What This Project Is About

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A plain-language overview of the topic and what the project investigates.

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The Problem It Addresses

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What problem or gap this project tackles and why it matters to the field or society.

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Objectives of the Project

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1. Identify how mindfulness-based practices affect social anxiety symptoms in adolescents.
2. Compare mindfulness interventions with a control condition to see which reduces anxiety more effectively.
3. Explore changes in daily functioning, such as school participation and peer interactions.
4. Assess whether benefits persist for a short period after the intervention.

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What You Will Do Step by Step

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1. Review basic literature on mindfulness and adolescent anxiety.
2. Recruit a sample of adolescents diagnosed with social anxiety symptoms.
3. Randomly assign participants to a mindfulness program or a wait-list control.
4. Deliver a structured mindfulness program over several weeks (e.g., breathing, body awareness, and present-moment focus).
5. Administer standardized anxiety measures before, during, and after the program.
6. Analyze data to compare changes between groups and examine follow-up scores.
7. Discuss practical implications for schools and families.

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Expected Outcome

A clear indication that mindfulness-based interventions can reduce social anxiety symptoms in adolescents, with improvements in daily functioning and social participation, and evidence on the durability of effects after the program ends.