An audiologist is a health-care professional specializing in identifying, diagnosing, treating andmonitoring disorders of the auditory and vestibular system portions of the ear. Audiologists are trainedto diagnose, manage and/or treat hearing, tinnitus, or balance problems. They dispense, manage, andrehabilitate hearing aids and assess candidacy for and map cochlear implants. They counsel familiesthrough a new diagnosis of hearing loss in infants, and help teach coping and compensation skills tolate-deafened adults. The auditory working memory was assessed through digit span task and digitsequencing tasks. Auditory digit span included forward and backward digit span test and auditory digitsequencing tasks included ascending and descending digit test. These tests were administered using"e;Auditory cognitive training module"e;. It develops language inefficiency and reduces communicationability. This book is concisely based on the basic concepts of hearing, its terminology, ear structure andmodalities of aural rehabilitation. It may help the teachers and the parents of children with disabilities tounderstand the basic concepts of the disability.