Chimp's stone throwing at zoo visitors was 'premeditated'

March 9, 2009 A chimpanzee

Researchers have found what they say is some of the first unambiguous evidence that an animal other than humans can make spontaneous plans for future events. The report in the March 9th issue of Current Biology, a Cell Press publication, highlights a decade of observations in a zoo of a male chimpanzee calmly collecting stones and fashioning concrete discs that he would later use to hurl at zoo visitors.

"These observations convincingly show that our fellow apes do consider the future in a very complex way," said Mathias Osvath of Lund University. "It implies that they have a highly developed consciousness, including life-like mental simulations of potential events. They most probably have an 'inner world' like we have when reviewing past episodes of our lives or thinking of days to come. When wild chimps collect stones or go out to war, they probably plan this in advance. I would guess that they plan much of their everyday behavior."

While researchers have observed many ape behaviors that could involve planning both in the wild and in captivity, it generally hasn't been possible to judge whether they were really meeting a current or future need, he added. For instance, when a breaks a twig for termite fishing or collects a stone for nut cracking, it can always be argued that they are motivated by immediate rather than future circumstances.

And that's what makes the newly described case so special, Osvath said. It is clear that the chimp's planning behavior is not based on a "current drive state." In contrast to the chimp's extreme agitation when throwing the stones, he was always calm when collecting or manufacturing his ammunition.

Osvath said he thinks wild chimps in general, as well as other animals, probably have the planning ability demonstrated by the individual described in the study. Indeed, experiments conducted recently with other captive have shown they are capable of making such plans. (Some have argued, however, that those findings could be the result of experimental artifacts.)

"I think that wild chimpanzees might be even better at planning as they probably rely on it for their daily survival," Osvath said. "The environment in a is far less complex than in a forest. Zoo chimps never have to encounter the dangers in the forest or live through periods of scarce food. Planning would prove its value in 'real life' much more than in a zoo."

Source: Cell Press


   
Rate this story - 4.7 /5 (6 votes)

Rank Filter

Move the slider to adjust rank threshold, so that you can hide some of the comments.


Display comments: newest first

  • thales - Mar 09, 2009
    • Rank: 1 / 5 (5)
    "It implies that they have a highly developed consciousness, including life-like mental simulations of potential events. They most probably have an 'inner world' like we have..."

    Right, like monkeys have a soul. Psshh.
  • barkster - Mar 09, 2009
    • Rank: 4 / 5 (2)
    Right, like monkeys have a soul. Psshh.
    Perhaps, not... but that doesn't eliminate the possibility that they can think about yesterday or plan out tomorrow in some simplistic fashion. Thought does not require a soul, as perhaps spirit and faith might.
  • Suzu - Mar 09, 2009
    • Rank: not rated yet
    Lol "soul" argument. We might as well talk about dancing Jesus in my backyard.
  • Bonkers - Mar 10, 2009
    • Rank: not rated yet
    not the first cretin comment from "thales" - probably exactly the type of visitor the monkey likes to throw stones at.
  • Icester - Mar 10, 2009
    • Rank: 5 / 5 (1)
    Lol "soul" argument. We might as well talk about dancing Jesus in my backyard.


    You have a dancing Jesus in your backyard? Cool. Upload a video to YouTube.

    Seriously though, the research is not implying or trying to imply anything about any religious aspect. It is about the way we internally represent the world and ourselves in the world. We do not represent the world in a 1-for-1 manner (ala Nyquist), but instead use a reduced, highly efficient representation (see qualia for related discussion). One of the most puzzling aspects of the internal representation is how we represent ourselves and this research is a step in the right direction.
  • thales - Mar 10, 2009
    • Rank: 4 / 5 (1)
    Unfortunate - I thought my humor was less subtle than apparently it was. My point was that the idea of a soul is silly. I was aiming for a parody of fundamentalism. My mistake - next time I'll use the [parody] [/parody] brackets.
  • thales - Mar 10, 2009
    • Rank: not rated yet
    not the first cretin comment from "thales" - probably exactly the type of visitor the monkey likes to throw stones at.

    Bonkers, are you still sore over the homeopath thing? Maybe you need to drink some remembery water. http://www.physor...047.html

    I'm sorry you think I'm a cretin. Ironic, really, since the etymology of the word suggests it likely comes from "Christian". Maybe you're the cretin?
  • Ethelred - Mar 15, 2009
    • Rank: not rated yet
    Right, like monkeys have a soul. Psshh.


    Of course you have massive evidence that humans have this so far undetected and completely hypothetical soul. Have just been keeping it a secret?

    Why did you even use the word soul? Its not even implied in the article.

    Ethelred
  • tw60407 - Mar 15, 2009
    • Rank: not rated yet
    Right, like monkeys have a soul. Psshh.


    Do humans have a soul? does the "soul" exist?
  • Ethelred - Mar 16, 2009
    • Rank: not rated yet
    thales said:
    Unfortunate - I thought my humor was less subtle than apparently it was.


    Subtle had nothing to do with it.


    http://www.godandscience.org/
    http://www.av1611...kjv.html
    http://www.jesus-is-lord.com/
    http://www.godhatesfags.com/
    http://www.landov...ist.org/
    http://objectivem.../zounds/]http://objectivem.../zounds/[/url]
    http://objectivem.../zounds/]http://objectivem.../zounds/[/url]

    At least one of the above is a fake religious site. Attempts to parody fanaticism is doomed to failure at least when you only have used one paragraph.

    Next time you might keep that in mind. Write a LOT more or passover it.

    Ethelred

March 9, 2009 all stories

Comments: 10

4.7 /5 (6 votes)

  • hide
  • Related Stories

  • Great apes think ahead
    created Jun 18, 2008 | popularity not rated yet | comments 0
  • Gesturing observed in wild chimpanzees
    created Mar 22, 2006 | popularity not rated yet | comments 0
  • Chimp and human communication trace to same brain region
    created Feb 28, 2008 | popularity not rated yet | comments 0
  • Endangered gopher frogs bred in zoo
    created Apr 08, 2008 | popularity not rated yet | comments 0
  • Study: Chimps don't care about friends
    created Oct 26, 2005 | popularity not rated yet | comments 0



  • hide
  • Relevant PhysicsForums posts

  • Do we lose weight by respiration ? (Losing carbons)
    created 2 hours ago
  • Sleeping habits and the risk of cancer
    created Feb 08, 2010
  • Pressure in chambers of the heart
    created Feb 07, 2010
  • Primordial soup canned?
    created Feb 07, 2010
  • More from Physics Forums - Biology

Other News

Scientists crash test DNA's replication machinery

Biology / Cell & Microbiology

created 37 minutes ago | popularity not rated yet | comments 0 | with audio podcast

(PhysOrg.com) -- Important molecular machines routinely crash into one another while plying their trades on DNA. New research shows that the enzymes that copy DNA before cell division, called replisomes, are the kings of ...


Benefits of badger culling not long lasting for reducing cattle TB, says study

Benefits of badger culling not long lasting for reducing cattle TB, says study

Biology / Ecology

created 54 minutes ago | popularity not rated yet | comments 0

(PhysOrg.com) -- Badger culling is unlikely to be a cost-effective way of helping control cattle TB in Britain, according to research published today in PLoS ONE.


giant oarfish

Bizarre giant oarfish filmed (w/ Video)

Biology / Plants & Animals

created 1hour ago | popularity 3.5 / 5 (2) | comments 0 | with audio podcast report

(PhysOrg.com) -- A rare giant oarfish, probably the largest bony fish in the ocean, has been filmed off the Gulf of Mexico. This is possibly the first time the fish has been observed in its natural environment.


Scientists release Key Largo wood rats in first test of restocking experiment

Biology / Ecology

created 1hour ago | popularity not rated yet | comments 0

The seven pioneers spent the week preparing for their upcoming ordeal in North Key Largo, sampling berries and other local fare, redecorating homes with sticks, leaves and whatever else they got their little paws on, and ...


Great tits: birds with character

Great tits: birds with character

Biology / Plants & Animals

created 14 hours ago | popularity 5 / 5 (3) | comments 3 | with audio podcast

(PhysOrg.com) -- In humans and animals alike, individuals differ in sets of traits that we usually refer to as personality. An important part of the individual difference in personality is due to variation ...