Planning for future needs has traditionally been considered to be restricted to human cognition. Although recent studies on
great ape and corvid cognition challenge this belief, the phylogenesis of human planning remains largely unknown. The complex
skill for future planning has not yet been satisfactorily established in any other extant primate species than our own. In
humans, planning for future needs rely heavily on two overarching capacities, both of which lie at the heart of our cognition:
self-control, often defined as the suppression of immediate drives in favor of delayed rewards, and mental time travel, which
could be described as a detached mental experience of a past or future event. Future planning is linked to additional high
complexity cognition such as metacognition and a consciousness usually not attributed to animals. In a series of four experiments
based on tool use, we demonstrate that chimpanzees (
Pan troglodytes) and orangutans (
Pongo abelii) override immediate drives in favor of future needs, and they do not merely rely on associative learning or semantic prospection
when confronted with a planning task. These results suggest that great apes engage in planning for the future by out competing
current drives and mentally pre-experiencing an upcoming event. This suggests that the advanced mental capacities utilized
in human future planning are shared by phylogenetically more ancient species than previously believed.
Keywords Planning - Mental time travel - Self-control - Bischof–Köhler-hypothesis - Animal consciousness