Navigation Links
Great apes make sophisticated decisions
Date:12/29/2011

Chimpanzees, orangutans, gorillas and bonobos make more sophisticated decisions than was previously thought. Great apes weigh their chances of success, based on what they know and the likelihood to succeed when guessing, according to a study of MPI researcher Daniel Haun, published on December 21 in the online journal PLoS ONE. The findings may provide insight into human decision-making as well.

The authors of the study, led by Daniel Haun of the Max Planck Institutes for Psycholinguistics (Nijmegen) and Evolutionary Anthropology (Leipzig), investigated the behaviour of all four non-human great ape species. The apes were presented with two banana pieces: a smaller one, which was always reliably in the same place, and a larger one, which was hidden under one of multiple cups, and therefore the riskier choice.

The researchers found that the apes' choices were regulated by their uncertainty and the probability of success for the risky choice, suggesting sophisticated decision-making. Apes chose the small piece more often when they where uncertain where the large piece was hidden. The lower their chances to guess correctly, the more often they chose the small piece.

Risky choices

The researchers also found that the apes went for the larger piece and risked getting nothing at all no less than 50% of the time. This risky decision-making increased to nearly 100% when the size difference between the two banana pieces was largest. While all four species demonstrated sophisticated decision making strategies, chimpanzees and orangutans were overall more likely to make risky choices relative to gorillas and bonobos. The precise reason for this discrepancy remains unknown.

Haun concludes: "Our study adds to the growing evidence that the mental life of the other great apes is much more sophisticated than is often assumed."


'/>"/>

Contact: Daniel Haun
daniel.haun@mpi.nl
49-341-355-0815
Max-Planck-Gesellschaft
Source:Eurekalert

Page: 1

Related biology news :

1. Great bustards to be released on Salisbury Plain
2. Waterborne disease risk upped in Great Lakes
3. Study of polar dinosaur migration questions whether dinosaurs were truly the first great migrators
4. Effects of climate change vary greatly across plant families
5. Over 1,000 species discovered in the Greater Mekong in past decade
6. Ancestral genome of present-day African great apes & humans had burst of DNA sequence duplication
7. Genetic differences between yeasts greater than those between humans and chimpanzees
8. Lower increases in global temps could lead to greater impacts than previously thought, study finds
9. Great Lakes sinkholes host exotic ecosystems
10. Greatest thing since sliced bread: New data offer important clues toward improving wheat yields
11. Scots and Irish at greater risk of drink-related death, study shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/18/2017)...  Socionext Inc., a global expert in SoC-based imaging and computing ... M820, which features the company,s hybrid codec technology. A demonstration utilizing ... Inc., will be showcased during the upcoming Medtec Japan at Tokyo ... Las Vegas Convention Center April 24-27. ... Click here for an image ...
(Date:4/11/2017)... DUBLIN , Apr. 11, 2017 Research ... Tracking Market 2017-2021" report to their offering. ... The global eye tracking market to grow at ... The report, Global Eye Tracking Market 2017-2021, has been prepared based ... report covers the market landscape and its growth prospects over the ...
(Date:4/5/2017)... 5, 2017 Today HYPR Corp. , ... server component of the HYPR platform is officially ... end-to-end security architecture that empowers biometric authentication across Fortune ... already secured over 15 million users across the financial ... connected home product suites and physical access represent a ...
Breaking Biology News(10 mins):
(Date:8/15/2017)... , Aug. 15, 2017 After spending the past ... support with crowdsourced data collection, GeneFo now offers this platform to ... aligning and amplifying support, adherence, and data collection vis a vis ... foundations mark the successful launch of this offer. ... GeneFo ...
(Date:8/15/2017)... ... August 15, 2017 , ... Any expert in stem cell ... these disciplines for more than half a century. Despite their essential roles in ... is widely known that molecular tags developed for this purpose also tag other, more ...
(Date:8/15/2017)... (PRWEB) , ... August 15, 2017 , ... ... encrypted shopping cart. Now mobile responsive, the new website makes it easy to ... anywhere in between. Users can now find detailed product information, educational industry content ...
(Date:8/11/2017)... 11, 2017  Market researcher Kalorama Information ... article regarding the telemedicine market.  The telemedicine ... Information.  The article, "Heart and Asthma ...  used information from Kalorama Information,s Remote Patient ... Market  (Sleep, Diabetes, Vital Signs /EKG ...
Breaking Biology Technology: