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Deaf - big D, versus deaf - little d

"In the field of Deaf Studies, the use of an upper case ‘D’ in the word ‘Deaf’ denotes membership of a Deaf community and use of an indigenous signed language as a primary or preferred language.

Use of the lower case ‘d’ in the word ‘deaf’ refers to people who have a medically determined hearing loss, but who may not consider themselves to be a member of the Deaf community, and who may not use an indigenous signed language.

A typical example of a ‘deaf’ person is an adult with an acquired hearing loss.

A typical example of a ‘Deaf’ person is a prelingually deaf child who, through use of an indigenous signed language, shared linguistic and cultural values with other signed language users."


Signed Languages in Education in Europe – a preliminary exploration

 Lorraine LEESON, Centre for Deaf Studies, School of Linguistic, Speech and Communication Science. Trinity College Dublin, 2006