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In human development, muteness or mutism [1] is defined as an absence of speech, with or without an ability to hear the speech of others. [2] Mutism is typically understood as a person's inability to speak, and commonly observed by their family members, caregivers, teachers, doctors or speech and language pathologists.
Deaf-mute is a term which was used historically to identify a person who was either deaf and used sign language or both deaf and could not speak.The term continues to be used to refer to deaf people who cannot speak an oral language or have some degree of speaking ability, but choose not to speak because of the negative or unwanted attention atypical voices sometimes attract.
Deafblind people communicate in many different ways as determined by the nature of their condition, the age of onset, and what resources are available to them. For example, someone who grew up deaf and experienced vision loss later in life is likely to use a sign language (in a visually modified or tactile form). Others who grew up blind and ...
According to Baker and Padden, it includes any person or persons who "identifies him/herself as a member of the Deaf community, and other members accept that person as a part of the community," [131] an example being children of deaf adults with normal hearing ability. It includes the set of social beliefs, behaviors, art, literary traditions ...
Assistive devices can be used alone or paired with a hearing aid or cochlear implant to aid listening in difficult or noisy environments. In the United States of America, the type preferred by most deaf adults is American Sign Language (ASL), which has rules and grammar that is distinct from English. There are also several variations of sign ...
Prelingual hearing loss can be considered congenital, present at birth, or acquired, occurring after birth before the age of one. Congenital hearing loss can be a result of maternal factors (rubella, cytomegalovirus, or herpes simplex virus, syphilis, diabetes), infections, toxicity (pharmaceutical drugs, alcohol, other drugs), asphyxia, trauma, low birth weight, prematurity, jaundice, and ...
A child of deaf adult, often known by the acronym CODA, is a person who was raised by one or more deaf parents or legal guardians.Ninety percent of children born to deaf adults are not deaf, [1] resulting in a significant and widespread community of CODAs around the world, although whether the child is hearing, deaf, or hard of hearing has no effect on the definition.
The process of language acquisition is varied among deaf children. Deaf children born to deaf parents are typically exposed to a sign language at birth and their language acquisition follows a typical developmental timeline. [1] [2] [3] However, at least 90% of deaf children are born to hearing parents who use a spoken language at home. [4]