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. 2021 May 18;10(10):2187. doi: 10.3390/jcm10102187

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Study timeline. Participants were profiled at baseline (T1) for their overall stuttering experience and other psychological indicators. They were then randomly assigned to IBSR or control groups and participated in either a 12-week IBSR intervention program or a 12-week passive control group. Psychological indicators and overall stuttering experience were assessed again at study-week 12 (T2) and 1 month after the end of the intervention (T3). IBSR = Inquiry Based Stress reduction. OASES-A = Overall Assessment of the Speaker’s Experience of Stuttering-Adults. STAI = State–Trait Anxiety Inventory. PFQ = Psychological Flexibility Questionnaire. SWLS = Satisfaction-with-Life Scale.