A portable on-the-body delayed auditory feedback was used in the establishment and transfer modes of fluent speech in a stutterer while he was on the Monterey Fluency Program. The performance of the client was compared with a "standard" population of stutterers. The portable DAF was comparable to the larger DAF in establishment and superior in transfer with minimal behavioral and technical problems. Use and potential value of the portable DAF in transfer and maintenance phases of therapy are discussed. © 1984.
Craven, D. C., & Ryan, B. P. (1984). The use of a portable delayed auditory feedback unit in stuttering therapy. Journal of Fluency Disorders, 9(3), 237–243. https://doi.org/10.1016/0094-730X(84)90017-2