Search

SummaryFor many years the principles of Delayed Auditory Feedback (D.A.F.) have been utilised: (a) in test for investigating non-organic hearing problems and (b) as a therapeutic aid to increase the oral fluency of stutterers.With reference to (a) above, if D.A.F. is to be of true value as a test for providing definitive information about the normality or otherwise, of a subject's auditory thresholds, then it is desirable that any subjective judgments of the effects on a person's voice, should be replaced by a quantifiable measure.It has been suggested that timing the reading of a passage may be useful for this purpose. Another approach is to measure the effects on the intensity of a subject's voice. A procedure was devised by the author to assess the value, if any, of the latter two measurements on a sample of 25 normally hearing subjects and on two cases with suspected non-organic hearing problems. A very clear pattern emerged for all the cases tested. It was found that if a relatively long delay time o...