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Reliability and Validity of the Unhelpful Thoughts and Beliefs Scale for Persian-Speaking Adults Who Stutter (Utbas-P): A Cross-Cultural Examination of Social Anxiety in People Who Stutter Publisher Pubmed



Farpour S1 ; Shafie B2 ; Menzies R3 ; Karimi H4
Authors
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Authors Affiliations
  1. 1. Trauma Research Center, Shahid Rajaee (Emtiaz) Trauma Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
  2. 2. Department of Speech Therapy, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Australian Stuttering Research Centre, University of Technology Sydney, NSW, Australia
  4. 4. Faculty of Health, Charles Darwin University, Australia

Source: Journal of Fluency Disorders Published:2025


Abstract

Background and Aim: An increasing body of research indicates that many adults who stutter (AWS) experience anxiety in social and verbal situations. The Unhelpful Thoughts and Beliefs about Stuttering (UTBAS) scales were developed to assess speech-related anxiety and negative cognitions associated with stuttering. This study aimed to translate the UTBAS into Persian, investigate its psychometric properties for Persian-speaking AWS, and compare the results with previously published UTBAS scores across various cultures. Method: The UTBAS scales were translated into Persian according to the protocols of the International Quality of Life Assessment Project and the World Health Organization. Sixty-two adults with developmental stuttering, aged between 18 and 51 years, participated in this study. The psychometric properties of UTBAS-P were investigated using similar measures to those used in previous studies where valid and reliable versions were available. Additionally, UTBAS-P scores were compared to UTBAS scores previously reported for Australian, Japanese, and Turkish participants. Results: The results showed that UTBAS-P had an acceptable face, content, and construct validity. It was significantly correlated with other anxiety-related measures. Additionally, its low and negative correlations with unrelated constructs, such as the NEO-PI-R domains of openness, agreeableness, and conscientiousness, confirmed its divergent validity. Regarding reliability, the significant test-retest reliability score (Pearson r = 0.87, p < 0.001) confirmed the stability of UTBAS-P scores over time, and its internal consistency was confirmed by Cronbach's alpha of 0.99. Similarities and differences were found between participants' UTBAS scores across different cultures. Conclusion: All four currently translated versions of the UTBAS have demonstrated high levels of validity and reliability, showing strong correlations with well-known anxiety measures. These findings suggest that the UTBAS has potential for use both clinically and in cross-cultural studies. © 2025 The Authors
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