A was a 10-year-old boy with a severe to profound mixed hearing loss in the left ear and a profound hearing loss in the right ear. He wore a hearing aid in his left ear. He received conventional auditory verbal therapy through school. Initially, he performed poorly (below 72%) on final-consonant-voicing-distinctions (FCVD), initial-consonant-voicing-distinctions (ICVD), initial-consonant-place-distinctions (ICPD) and final-consonant-place-distinctions (FCPD) tasks of the first CD of the Listen-Hear program (Normal Hierarchy of Speech Sound Acquisition Module).

Following the pre-test to establish his initial level of performance, A participated in six weeks of home based speech perception training using the Listen-Hear program, three times per week.

A showed improvement on these tasks by the second week of training. From pre- to post-test on the ICVD task, his score improved from 40 % to 72%; on the FCVD task from 25% to 100%; on ICPD, 61% to 100% and on FCPD, from 61 to 72%.

Pre-, post-, and follow-up tests also included standardized measures. A's performance on Test of Auditory Comprehension (TAC) improved, increasing from completion of level five to level six suggesting a general improvement in his ability to understand spoken language.

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