Hearing loss in critical ages or before it often leads to serious damage to
   the lingual and verbal ability in children. It causes limitation , sensational
   problems and disability in communication and consequently creates
   isolation , depression sociopsycological and emotional problems. Therefore
   it is necessary to help a child to experience hearing , systemically and be
   able to hear sounds easier and also to distinguish between them. We are
   able to achieve this goal by auditory training program , consequently one
   will be able to use his  remains of hearing ability for sound perception in the
   best way.

          In this experimental study 52 deaf children (under the age of 7 years)
   were studied in Hamadan . They were divided in two groups , each consist
   of 26 children on the basis of their IQ and the degree of loss of hearing. In
   test group the children were familiarized with sign communication method
   and also with verbal communication method, while children in control
   group only used sign language for communication and they had no
   information about verbal communication method. 

          The research findings showed implication of auditory training program
   caused lingual and verbal development in children under 7 year in
   Hamadan. Children with more hearing remains had better verbal lingual
   growth than those with less hearing remains. Also there was no relation
   between sex and age  and verbal lingual growth in this group. In other word
   familiarity with verbal communication method is the main factor for verbal
   lingual growth in this group.

          Finding revealed that after administering auditory training program ,
   distinguishing and identifying verbal and nonverbal method developed
   better than control group.