Tehran University of Medical Sciences Journal of Modern Rehabilitation 2538-385X 13 3 2020 02 19 153 160 Hossein Rezai Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Hadi Torabi Department of Speech Therapy, School of Rehabilitation, Arak University of Medical Sciences, Arak, Iran. Neda Tahmasebi Department of Speech Therapy, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Mohammad Hossein Haghighizadeh Department of Biostatistics, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Peyman Zamani Musculoskeletal Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Farzaneh Abdi Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Mohammad Mehdi Karami Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Zohreh Mehdipour Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. 2020 02 19 Introduction: Subjects with stuttering may show different numbers of stuttering-like disfluencies during reading and monologue tasks. The study aimed to compare the speech rate and stuttering frequency during reading and monologue tasks in subjects with stuttering and those with fluent speech. Materials and Methods: A total of 24 subjects with stuttering and 24 subjects with fluent speech participated in this analytical-descriptive cross-sectional study. A video camera recorded the participants’ reading and monologue samples. The second version of the computerized scoring of the stuttering severity (CSSS-2) software and Praat version 5.3.78 was used to measure stuttering severity and speech rate, respectively. Statistical analysis was conducted in SPSS version 23 by applying the Independent t-test and Spearman’s correlation coefficient. Results: In stuttering subjects, the mean stuttering frequency was higher during monologue than reading, but not statistically significant (P=0.05). In both groups, the mean speech rate was significantly higher during reading compared to monologue. Also, in both reading and monologue tasks, the mean speech rate was significantly higher in subjects with fluent speech than in those who stutter (P<0.001). Finally, a significant negative correlation was observed between the mean stuttering frequency and speech rate during both tasks. Conclusion: Considering the monologue time, subjects with stuttering have higher speech rate and less stuttering in reading. Because of stuttering-induced speech disruptions, subjects with stuttering speak slower during both reading and monologue tasks compared to subjects with fluent speech. https://jmr.tums.ac.ir/index.php/jmr/article/view/247 https://jmr.tums.ac.ir/index.php/jmr/article/download/247/152