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The word deaf is most often associated with two meanings: The global deaf population is roughly estimated to be 0.1% of the total population (1 in 1000) . The figure is likely to be higher in developing countries than developed countries due to restricted access to health care, and, in some cultures, due to the high rate of intrafamilial marriages. The great majority of people with less than average hearing are elderly or developed hearing loss after leaving school. A deaf people who are part of Deaf culture use sign language as their primary language and often emphatically see themselves as not disabled, but rather as members of a cultural or language minority. Members of this group use Deaf as a label of cultural identity much more than as an expression of hearing status. Hearing people may also be considered culturally Deaf if they participate in Deaf culture and share Deaf cultural values; this is sometimes referred as 'attitudinal deafness'. For example, children of deaf adults (CODAs) with normal hearing ability may consider themselves, and be considered, culturally Deaf. Deafness is not limited to humans, but can also occur in other animals.
Deaf vs. Hard of Hearing Deaf generally implies a profound loss of hearing; someone with a partial loss of hearing is more likely to be referred to as hard of hearing or the qualified partially deaf. The term hard of hearing may be used to describe all degrees of hearing loss up to and including total deafness. In the case of profound deafness this may be political correctness, a euphemism for the simpler and accurate "deaf". Total deafness is quite rare; most deaf people can hear a little, but since hearing loss is generally frequency-based rather than amplitude-based, a deaf person's hearing may not be usable, if the normal frequencies of speech lie in the impaired range. People with a moderate hearing loss, of about 36-50 dB, (http://www.handsandvoices.org/resources/coGuide/05_Lossvseffct.htm), generally describe themselves as "partially deaf". Others who were born hearing, but who have partially lost their hearing through illness or injury are "deafened". Those with a slight hearing loss (eg. about 16-35 dB hearing loss(hands & voices)), or have lost some of their hearing in old age may prefer an informal term such as "hard of hearing". Those with some functional hearing generally do not take part in the Deaf community, and typically work and socialize with hearing people to the best of their ability. People with all degrees of hearing impairment may encounter discrimination when looking for work socializing with hearing people. Other meanings of deaf "When in disgrace with fortune and men's eyes I all alone beweep my outcast state, And trouble deaf heaven with my bootless cries," As an acronym Categories of deafness and hearing impairment These categories may be overlapping. Deafness or hearing impairment may be: Age of onset is also a significant factor. See also | ||||||||
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