 The study of communication disorders has a history that can be traced all the way back to the ancient Greeks.Modern clinical linguistics, however, largely has its roots in the twentieth century, with the term ‘clinical linguistics’ gaining wider currency in the 1970s, with it being used as the title of a book by prominent linguist David Crystal in 1981.Widely credited as the ‘father of clinical linguistics’, Crystal's book "Clinical Linguistics" went on to become one of the most influential books of the field, as this new discipline was mapped out in great detail.