There are many well-known conditions in which stuttering temporarily disappears or is significantly reduced. Nearly all stutterers experience this temporary amelioration indicating that the beneficial effects of these conditions are somehow related to the nature of stuttering itself rather than the persons who stutter. In contrast, the conditions that increase stuttering are less well established, tend to vary widely among stutterers and, for the most part, produce relatively small and inconsistent increases in stutters. This suggests that conditions that increase stuttering are tied to the particular experiences of individual stutterers and how they react to and deal with their experiences. Immediate 90 to 100 percent reduction Chorus reading Different material less effective than common material.
Effect is present even when chorus is over the telephone.
Normally we hear ourselves speaking instantaneously. It is possible to create a situation in which a speaker wearing a pair of headphones speaks into a microphone and hears himself just a fraction of a second after the words have been spoken. In order for DAF to be effective, the feedback needs to be at a high volume so as to drown out the bone-conducted instantaneous feedback. DAF has widespread effects on the speech output. Interestingly, however, stutterers speaking under DAF produce very few disfluencies.