The investigation of the validity and reliability of the Turkish version of the Wright and Ayre Stuttering Self-Rating Profile (WASSP)

摘要

Background: Self-assessments for adults who stutter are recommended as a primary evaluation tool for including their views on stuttering. Evaluating adults who stutter with self-assessment scales is important. However, there is no tool in the Turkish literature that provides this measurement. Aims: To develop the Turkish version of The Wright and Ayre Stuttering Self-Rating Profile (WASSP) in order to analyse its validity and reliability, and investigate its applicability for Turkish-speaking individuals. Methods & Procedures: The study included 120 adults who stutter (aged 18-54 years). All the participants completed The Wright and Ayre Stuttering Self-Rating Profile—Turkish version (WASSP-TR) and the SF-36 form. The reliability analysis involved the calculation of Cronbach's alphas for test-retest and the Pearson product-moment correlation coefficient for internal consistency. The validity analysis, in turn, involved a confirmatory factor analysis for construct validity and testing correlations with the SF-36 for criterion validity. Outcomes & Results: Internal consistency coefficients of the WASSP-TR were reported to be high (> 0.70). The correlations between the WASSP-TR and its subscales showed significant results (0.858-0.966) (p < 0.01). The correlation between the subscales of the WASSP-TR and the SF-36 was reported to be consistent (from -0.492 to 0.747). There was a positive correlation between stuttering severity groups and the WASSP-TR scores (p < 0.01). Conclusions & Implications: The WASSP-TR is a valid and reliable scale for Turkish-speaking adults who stutter.