27302 Kofa "[This research] give[s] clear indications that there is a shift from the mother tongue towards Fulfulde in the study area... Fulfulde has intruded into more and more domains of life and assumed more and more functions among the different ethnic groups in the study area. Other languages are less and less used and are finally threatened as the languages of the home." Language shift from mother tongue towards Fulfulde in Adamawa State, Nigeria: causes and consequences On