Sign language,
Mental health,
Behavior change,
Communication training,
Language training,
2. Generally speaking, hearing-impaired children can be described as a kind of children who have no serious mental or emotional disorders, but have hearing impairment and need to use artificial hearing-aid technology or acquire special and extra skills to overcome their obstacles. They follow the same development route and order as hearing-impaired children, but they also show special educational needs to some extent. Because of hearing impairment, hearing-impaired children often show different characteristics from hearing-impaired children in language, cognition, emotion and personality development.