This module examines explanations of how language evolved in humans. We explore the evolution of the human language capacity drawing on evidence from linguistics, evolutionary theory, primatology and (paleo)anthropology. We consider language as a cognitive adaptation and ask what it is an adaptation for, e.g. instruction in tool making, as a form of social bonding, or as a means of winning a potential mate. We consider the phylogenetic development of language within the species as well as what cognitive and communicative abilities in non-human primates might reveal about the origins and functions of human language.