ABSTRACT
Deficit in fluency of speech is named stuttering. Stuttering could influence the personality characteristics. The purpose of this study was to investigate the effect of stuttering on personality characteristics in male individuals. In this study, 31 stuttered men aged upper than 18 years old were compared with another 32 unstuttered men of the same age and education in terms of their personality characteristics by applying the Neo-FFI test. Results from student t test showed that the mean score of mental racial, extraversion and agreeableness of personality was statistically different between two groups. The present findings indicate that individuals with stuttering problem have different personality compared with fluent speakers; however, this different does not mean abnormal personality