The study of all aspects of the linguistics of various African languages, including the study of the phonetics, phonology, morphology, syntax, sociolinguistics, historical origin, diachronic development and teaching of the linguistics of these languages

Taljard E: 2001. 'n Diachroniese perspektief op die identifiserende kopulatief in Bantoe. South African Linguistics and Applied Language Studies, 19(1-2), pp 83-95.

Taljard E: 2001. A diachronic perspective on variable copulative prefixes in Sepedi. South African Journal of African Languages, 21(2), pp 186-196.