This monograph is the first study of the acquisition of Swahili as a first language. It focuses on the acquisition of inflectional affixes, with a particular emphasis on subject agreement and tense. Other inflectional affixes are also investigated, including object agreement and mood. The study surveys the adult dialect in question, Nairobi Swahili, discussing social, phonological, morphological and syntactic properties. Data, analyses and copious examples are presented of the naturalistic speech of four Swahili speaking children. The data are tested against six influential theories of child...