Our study sought to show the relation between dysphonia and personality traits as explained by Gray's theories. Personality traits were analyzed in a patient group of 141 patients who showed functional and congenital voice disorders. The results were compared to the control group made up of 99 vocally healthy individuals. Their objective voice quality was measured by using the Dysphonia Severity Index, Voice Handicap level was measured using the VHI-10, and a perceptive analysis was conducted with a listening jury. The results showed significant differences in Introversion and Neuroticism and a greater tendency for activating the behavioral inhibition system in the patient group. Such an influence was also evident in voice quality measures. The results were similar to specialized literature.