About one percent of the world's population stutters, a speech disorder that affects four times as many men as women. Researchers at the University of California, Santa Barbara, have published two studies: one that identifies brain structures linked to stuttering and another that examines a new way to treat the condition.
According to Janis Ingham, a professor emerita of speech and hearing sciences and coauthor of both papers, the two studies taken together demonstrate two critical points: a neuroanatomic abnormality exists in the brains of people who stutter, yet they can learn to speak fluently in spite of it.
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