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Investigation of Integrated Behavior Therapy for Selective Mutism: A Replicated Single-Case Study Design

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  • Allison Siroky
  • John Carlson
  • Aimee Kotrba

Abstract

Selective Mutism (SM) is a rare but potentially debilitating disorder characterized by a lack of speech in certain settings where speaking is expected. This study examined the effectiveness of a shortened version (12 sessions over 18 weeks) of Integrated Behavior Therapy for Selective Mutism (IBTSM; Bergman, 2013) in increasing speech and relieving anxiety for two four-year-old males with SM via a replicated single-case design. Treatment effectiveness, integrity, and acceptability were measured at baseline, throughout treatment, and at a three-month follow-up. Treatment integrity was excellent for both cases. SM severity ratings decreased from baseline to end-of-treatment, and again at follow-up, for each case. Verbal communication increased at end-of-treatment and follow-up, and significant decreases in social anxiety were seen across both cases by the three-month follow-up. Parents rated the shortened IBTSM as highly acceptable, effective, and efficient. Future studies should explore the effectiveness of varying lengths of IBTSM.

Suggested Citation

  • Allison Siroky & John Carlson & Aimee Kotrba, 2017. "Investigation of Integrated Behavior Therapy for Selective Mutism: A Replicated Single-Case Study Design," International Journal of Psychological Studies, Canadian Center of Science and Education, vol. 9(2), pages 1-82, June.
    • Handle: RePEc:ibn:ijpsjl:v:9:y:2017:i:2:p:82
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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