Children\'s evening varies. Normal circumstances, language retardation caused by most common cause is mental retardation. Intelligence and language has a very close relationship. Mental retardation in children cannot pay attention to what other people say to him, the spirit cannot be set, imitating poor capacity, unable to express and understand the meaning of the term. Sometimes also can clear a Word, but soon forgotten.
Hearing defects also affect the development of language. Children cannot learn to speak of severe hearing loss, hearing loss when it is not too serious, you can see someone lip action learning pronunciation. LIP SYNC SYNCHRONIZATION changes evident in is easy to learn, such as \"waves, and the Ming\"; but some rely on sound of tongue movement, such as \"Domingo,\" learn difficult. If talking later hearing, General talk will not be affected.
Relationship between family factors and speak sooner or later there. Some normal intellectual development of children, and no hearing, didn\'t find any other disease, is talking late, which may be associated with family, talk to the parents hours may also be later. In General, oral diseases in young children, such as cleft lip, cleft palate tongue frenulum is too long, and so on, will not cause the slow talking, in front of the unpatched, only affect the clarity of speech.
