The use of time-expanded speech as an aid in the diagnosis of articulation disorders.

The recordings of 20 speech defective speakers' readings of a standard prose passage were presented to 36 student speech clinicians under three listening conditions: (1) unaltered; (2) time expanded to 150% of the original recording time; and (3) time-expanded to 200% of the original recording time. Results of their evaluations indicate that the expanded versions of the recordings elicited more accurate evaluations by the student clinicians. Implications of these findings concerning the possible usefulness of time-expanded speech as an aid in the training of listening skills in student speech clinicians are discussed.