Editing Conceptual metaphor (section)

==Mapping in animals==
A current study showed a natural tendency to systematically map an abstract dimension, such as social status, in our closest and non-linguistic relatives, the chimpanzees.<ref>Dahl, C. D. and Adachi, I. 'Conceptual metaphorical mapping in chimpanzees (Pan troglodytes)', eLife 2013;2:e00932. {{doi|10.7554/eLife.00932}}</ref> In detail, discrimination performances between familiar conspecific faces were systematically modulated by the spatial location and the social status of the presented individuals, leading to discrimination facilitation or deterioration. High-ranked individuals presented at spatially higher position and low-ranked individuals presented at lower position led to discrimination facilitation, while high-ranked individuals at lower positions and low-ranked individuals at higher position led to discrimination deterioration. This suggests that this tendency had already evolved in the common ancestors of humans and chimpanzees and is not uniquely human, but describes a conceptual metaphorical mapping that predates language.