I have 50 years of experience, and specialize in the field of human hearing with specific knowledge in the areas of individual differences in auditory abilities, relation of auditory abilities to reading and language problems and computer-based speech training. I have published on such topics as perception of complex sounds, speech and nonspeech, individual differences in auditory abilties and auditory perceptual learning. I have served on numerous reviewing panels for government agencies. I chaired the National Research Council’s working group on aids for the hearing impaired. I founded and am president of a small company involved in research and development of computer-based speech training systems.