Abstract
Selective review of the literature concerning stuttering. Stuttering is an astonishingly vague term. "Atomic fission is simple compared with the psychological, endocrinological, biochemical, genetic, and developmental problems wrapped up in stuttering." Research on stuttering has been going on in a significantly systematic sense for hardly > 20 yrs. Many of the findings of early studies conflict with later findings only because investigative methods have been improved. The disorder is complex.