David A. Leavens
The Ontogeny and Phylogeny of Non-verbal Deixis
The Prehistory Of Language 8.0, 2009
It is widely reported that our nearest living relatives, the great apes, lack a “declarative” mode of communication. There are few reports of any ape, regardless of rearing history, explicitly informing another about a state of the world as an apparent end in itself; see eg ...