1990 Volume 31 Issue 2 Pages 195-208
147 (38 %) of 391 hearing-impaired preschoolers who had been provided early language education by auditory training method for 15 years succeeded in overcoming “The stagnation of development at age 9”.
The following conditions were essential in order to achieve this purpose by auditory training method:
1) Auditory-oral channels of communication and auditory receptive ability of speech had to be acquired by the age of 3.
2) The same level of speech ability as normal children had to be acquired by about 6 years of age.
3) Assessment of the precise conditions and educational means for achieving speech had to be properly completed.
4) If the results of the above were favorable and verbal IQ and speech ability were acquired as a normal child by age 6, then “The stagnation of development at age 9” can be overcome without special training at school.
