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Great Apes Think Ahead: Conclusive Evidence Of Advanced Planning Capacities

Date:
June 19, 2008
Source:
Springer
Summary:
Apes can plan for their future needs just as we humans can -- by using self-control and imagining future events. Swedish researchers are the first to provide conclusive evidence of advanced planning capacities in nonhuman species.

In a series of four experiments, Mathias and Helena Osvath investigated whether chimpanzees and orangutans could override immediate drives in favor of future needs, and therefore demonstrate both self-control and the ability to plan ahead, rather than simply fulfill immediate needs through impulsive behavior.
Credit: iStockphoto/Michael Steden

Apes can plan for their future needs just as we humans can – by using self-control and imagining future events. Mathias and Helena Osvath’s research, from Lunds University Cognitive Science in Sweden, is the first to provide conclusive evidence of advanced planning capacities in non-human species.

The complex skill of future planning is commonly believed to be exclusive to humans, and has not yet been convincingly established in any living primate species other than our own. In humans, planning for future needs relies heavily on two mental capacities: self-control or the suppression of immediate drives in favor of delayed rewards; and mental time travel or the detached mental experience of a past or future event.

In a series of four experiments, Mathias and Helena Osvath investigated whether chimpanzees and orangutans could override immediate drives in favor of future needs, and therefore demonstrate both self-control and the ability to plan ahead, rather than simply fulfill immediate needs through impulsive behavior.

Two female chimpanzees and one male orangutan, from Lund University Primate Research Station at Furuvik Zoo, were shown a hose and how to use it to extract fruit soup. They were then tempted with their favorite fruit alongside the hose to test their ability to suppress the choice of the immediate reward (favorite fruit) in favor of a tool (the hose) that would lead to a larger reward 70 minutes later on (the fruit soup). The apes chose the hose more frequently than their favorite fruit suggesting that they are able to make choices in favor of future needs, even when they directly compete with an immediate reward.

New tools the apes had not encountered before were then introduced: one new functional tool which would work in a similar way to the hose, and two distractor objects. The apes consciously chose the new functional tool more often and took it to the reward room later on, where they used it appropriately, demonstrating that they selected the tool based on its functional properties. According to the authors, this indicates that the apes were pre-experiencing a future event i.e. visualizing the use of the new tool to extract the fruit soup.

One of the decisive experiments excluded associative learning* as an explanation of the results. Associative learning has been suggested to account for the findings in previous planning studies on animals (corvids and great apes), and therefore the previous studies have not been generally accepted as evidence for non-human planning.

Taken together these results strongly suggest that great apes engage in planning for the future. The authors conclude that “the results of this study entail that capacities central to humans evolved much earlier than previously believed.”

*A learning principle based on the belief that ideas and experiences reinforce one another and can be mentally linked to enhance the learning process.


Story Source:

The above story is based on materials provided by Springer. Note: Materials may be edited for content and length.


Journal Reference:

  1. Osvath et al. Chimpanzee (Pan troglodytes) and orangutan (Pongo abelii) forethought: self-control and pre-experience in the face of future tool use. Animal Cognition, 2008 DOI: 10.1007/s10071-008-0157-0

Cite This Page:

Springer. "Great Apes Think Ahead: Conclusive Evidence Of Advanced Planning Capacities." ScienceDaily. ScienceDaily, 19 June 2008. <www.sciencedaily.com/releases/2008/06/080618114602.htm>.
Springer. (2008, June 19). Great Apes Think Ahead: Conclusive Evidence Of Advanced Planning Capacities. ScienceDaily. Retrieved October 22, 2014 from www.sciencedaily.com/releases/2008/06/080618114602.htm
Springer. "Great Apes Think Ahead: Conclusive Evidence Of Advanced Planning Capacities." ScienceDaily. www.sciencedaily.com/releases/2008/06/080618114602.htm (accessed October 22, 2014).

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