Nowadays definition of hearing impairment is not based on hearing thresholds. As defined in the new reference books, the boundary between hearing loss and deaf hearing is defined on the basis of functional characteristics. In this definition, the degree to which a person's reliance on hearing and sight is based on a distinction between hearing loss and deafness. The deaf person relies on his or her sense of sight to receive and understand the speech of others and uses the sense of hearing as a helping hand, while the hearing impaired person receives hearing sensation in the first place uses itself and uses the sense of sight alongside it.

Rehabilitation and teaching methods for hearing impaired children can be divided into two general categories:
1. “Visual-based” methods, use of these methods need to interfere with the "sight" as a training element.
These methods include the American Sign Language / ASL, Total Communication, Cued Speech, and Auditory-Oral.
2. “Listening-based” methods emphasizing learning through hearing and listening. In these methods, exercises and training activities focus on hearing loss and avoid visual focus, especially in the first years of learning listening skills.
Auditory-Verbal Therapy is one of these methods.
In general, in the broad range of rehabilitation and education of hearing loss people, the auditory-verbal approach (AVT) has the highest emphasis and the language of the signage has the least emphasis on hearing. Other methods fall into the midst of this range according to their defined principles.
From the point of view of Auditory-Verbal Philosophy (AVT), the presence of the hearing loss people in the ordinary society requires the training, which the most important requirement is the maximum use of the child's residual hearing. This made possible by special and targeted hearing, especially in the early years of training.
Regarding the coordination of the vision of the Newsha hearing institute that "the achievement of the deaf, the rights of an independent citizen" with the philosophy of the AVT methodology, as well as the successful experience of the center in the implementation of the fifteen years of this method and international cooperation in order to access the knowledge of the day, Newsha hearing institute for hearing impaired children is based on auditory-verbal methods for better and more efficient service to world dear people.
The auditory-verbal method is the result of natural growth and development of knowledge and technological advancement. As a result of these advances, new therapeutic approaches were developed, and auditory-verbal methods grew rapidly and became widespread. Using this method, a large number of hearing impaired children were able to learn speech, communicate with other members of the community, reach higher levels of school and academic levels, and become more comfortable with their occupation and work in the community. Finally, they will feel more secure in their personal and social aspects and have fewer restrictions.
Comparison of the verbal hearing method with other methods:
Nowadays, based on auditory-verbal exercises, much more facilities and properties are provided for hearing impaired children. This group of hearing impaired children and their parents are moving from the silent world to the colorful sounds world.
In the Newsha children clinic, the latest AVT methodologies and equipment are used by audiologists and SLPs specialized in this field to maximize the child's abilities. In order to monitor the progress of the child, periodic audiometric tests are performed every 6 months and the results are included in the relevant file.
“Hoping for a day when all hearing impaired children live independently.”