Behavioral Temporal Auditory Processing Tests in Adult Stutterers

Purpose: To assess the temporal processing function in adults stutterers and compare the results with non-stutterers. Patients and Methods: Eighty adults: forty with stuttering as the study group and forty without stuttering as controls, whose age ranged between 18-45 (27.7±7.53) and 18-55 (29.88±10.56) respectively, were compared regarding selective behavioral temporal auditory processing tests: Pitch Pattern Sequence Test (PPST), Duration Pattern Test (DPT), Time Compressed Sentences Test (TCST) for adults and Auditory Fusion Test-Revised (AFT-R). The severity of stuttering was evaluated by using Stuttering Severity Instrument (SSI-3). Results: Scores of the AFT-R was statistically significantly higher (worse) in the study group than the control group in both ears and at all frequencies. PPST, DPT and TCST showed statistically significant lower values (worse) in the study group than the control group in both ears. No correlation was found between stuttering severity assessed by (worse) index score and either AFT-R, PPST, or DPT, while there was a statistically significant negative correlation between stuttering severity and TCST at 40%, and 60%