d.) Communications disorders are among the most common disabilities in the United States (Castrogiovanni, 2008)
Communications Disorders The federal Individuals with Disabilities Education Act (IDEA) defines a learning disability as: "a disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, that may manifest itself in an imperfect ability to listen, think, speak, read, write, spell, or do mathematical calculations, including conditions such as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia" (MedicineNet, 2008)