It's physical, not psychological: researcher
(NEWSER) - Stuttering has long been considered a psychological issue, something born of anxiety or trauma—but new research suggests it’s in the genes, the Telegraph reports. “The brain actually looks different in people who stutter compared with those that don’t,” says a scientist. Certain gene variations often appear in stutterers, particularly in a part of the brain tied to muscle control. The gene can kill cells, and that cell death may "block" the stutterer from pronouncing some sounds, he says. More»