The Application of Sound Discrimination Tests to Functional Articulatory Defectives with Normal Hearing

Abstract

3 tests of sound discrimination, the Seashore Measure of Timbre, the Travis-Glaspey Speech Sound Discrimination Test and a new test of vowel sound discrimination, were applied to 3 exptl. groups, each consisting of 13 [male][male] 17 to 24 yrs. of age, and having normal hearing acuity: 1) untrained articulatory defectives, 2) articulatory defectives who had received clinical therapy'' and 3) normal speakers. Untrained articulatory defectives-did not differ significantly from normal speakers. Trained defectives did not differ significantly from untrained defectives. Trained defectives did not differ significantly from normal speakers. The present investigation failed to substantiate the conclusion that articulatory defectives fail in sound discrimination ability.