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 (see “Signed Languages in Education in Europe – a preliminary exploration
”, Lorraine LEESON, Dublin. Council of Europe. 2006).