ArticleSleep advances : a journal of the Sleep Research Society2026
Breaking the sleep tunnel: effects of a single-session scarcity-informed mass psychoeducation on dysfunctional beliefs and insomnia symptoms.
Article in Sleep advances : a journal of the Sleep Research Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Study Objectives: Cognitive-behavioral therapy for insomnia (CBT-I) effectively targets dysfunctional sleep beliefs but remains inaccessible to most. This study examined whether a single 60-minute mass psychoeducation session, incorporating Scarcity Theory with CBT-I psychoeducation elements and Acceptance and Commitment Therapy concepts, could reduce dysfunctional beliefs and insomnia symptoms over 4 weeks. Materials and Methods: This prospective, single-arm study was conducted at Seoul National University Bundang Hospital. Of 182 lecture attendees, 81 consented, 40 completed baseline and immediate post-lecture assessments, and 29 completed all four timepoints through 4 weeks. The primary outcome was the Korean Dysfunctional Beliefs and Attitudes about Sleep-6 (K-DBAS-6). Secondary outcomes included the Insomnia Severity Index-3 (ISI-3), Bandwidth Tax Visual Analogue Scale (BT-VAS), and Patient Global Impression measures. Longitudinal effects were analyzed using repeated measures ANOVA ( Results: K-DBAS-6 decreased significantly ( Conclusions: A single mass psychoeducation session informed by Scarcity Theory produced significant, sustained reductions in dysfunctional sleep beliefs and insomnia symptoms with medium effect sizes. This scalable approach warrants investigation as a first-step intervention for insomnia.
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