According to the American Speech-Language Hearing Association (ASHA), one in ten Americans has a communication disorder. This disorder can be the result of a stroke, undetected hearing loss, stuttering problem, head injury, language disorder, or other disorders or conditions, such as cerebral palsy, cleft palate, mental retardation, faulty learning, or emotional problems.

Audiologists, speech-language pathologists, and speech, language, and hearing scientists work together to help people with communication problems. ASHA serves as their credentialing association and as a major resource for scientific research and practice advancements.