[2] Peng and his wife, also deaf, used SSL in the sign school to teach children to read in Chinese and other subjects at the primary level.Lim Chin Heng, a former student under Peng, went to the United States of America (USA) to learn English and American Sign Language (ASL).[citation needed] In 1976, SADeaf invited Frances M. Parsons, then an associate professor at the Gallaudet University to promote Total Communication.However, the sign section of SSD, which used SSL, was phased out in 1983 because there were gradually fewer parents who opted for a Chinese education for their deaf children.Hence, there is crucial need to preserve and maintain local signs invented by the deaf community in Singapore since the early 1950s.It involves the use of SgSL following the spoken English Language word order with simplified or reduced grammar.The Directory of Services for the Disabled states that students at CS are taught using the Natural Auditory-Oral Philosophy, which emphasises the use of audition.[3] The technological progress and development of hearing aids and cochlear implants allow hearing-impaired children to participate in class.Additional therapy programmes provided by schools and other specialised institutions, as in the case of CSHI with their Audio Verbal Therapy (AVT) or the Listen and Talk programme at the Singapore General Hospital, aim to improve performance of hearing-impaired children in a beneficial setting.The Listen and Talk Programme uses the Auditory-Verbal approach, which helps children access speech and language primarily through auditory input.It allows to integrate affected children in mainstream schools so that their hearing classmates function as important language models in their learning process.American Sign Language (ASL) was introduced to Singapore's deaf community by Lim Chin Heng, in 1974.Lim Chin Heng was instructed by Peng Tsu Ying and additionally studied English and ASL at Gallaudet University in the United States.For both adults and children within the deaf community, this perception, to some extent, leads to them becoming unable to learn sign language, which negatively impacts them socially.[3] While the SEE-II system is continually being used to help deaf people improve their grasp of English, Singapore Sign Language (SgSL) is evolving as another method for them to communicate.Additionally, Singapore Sign Language (SgSL) has not gone through any form of linguistic research/study; this is because of a lack in government resources and funding.This, however, will take a long time to happen, for this is still in the beginning stages; this is the case because the matter is highly complex in Singapore.