Navigation Links
Animals with bigger brains, broader diets have better self control
Date:4/24/2014

cylinder for a see-through one. To fish out the food, the animals had to resist the natural impulse to reach directly in front of them for the treat -- which would only cause them to bump their paws, beaks or trunks into the plastic -- and instead reach around through a side entrance as they learned before.

In another test, the researchers showed the animals where to find a treat hidden in one of three cups placed upside down on a table, then moved the treat to a different cup while the animals looked on. To get it right, the animals had to suppress the urge to keep looking under the first cup and search under the new cup instead.

Bonobos, gorillas and orangutans performed well on both tests, picking the correct cup or reaching for the right opening more than 90% of the time. But squirrel monkeys and a lesser-known primate called the Coquerel's sifaka did miserably, getting it right less than half the time.

Led by MacLean and Brian Hare and Charlie Nunn of Duke University, the researchers looked at a range of factors that could explain why some species excelled and others floundered.

Overall, the species with the highest scores on the self-control tests had bigger brains. Absolute brain size mattered, but relative brain size did not -- suggesting that species differences in self-control may be due to differences in how the brain is wired, rather than having big brains for their bodies per se.

In addition to brain size, the researchers also looked at whether lifestyle factors might play a role. One of the most widely accepted ideas is that animal intelligence evolved to deal with the demands of living in a group. The bigger the group, the better an animal needs to be at keeping track of social relationships and managing the delicate balance between competing and cooperating.

Surprisingly, group size didn't seem to matter for self-control, but within primates the researchers found support for another idea: Primat
'/>"/>

Contact: Robin Ann Smith
rsmith@nescent.org
919-668-4544
National Evolutionary Synthesis Center (NESCent)
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Sunken logs create new worlds for seafloor animals
2. Ancient shrimp-like animals had modern hearts and blood vessels
3. First animals oxygenated the ocean, study suggests
4. In grasslands remade by humans, animals may protect biodiversity
5. System-wide analyses have underestimated the importance of transcription in animals
6. Theory on origin of animals challenged: Animals needs only extremely little oxygen
7. Caring for animals may correlate with positive traits in young adults
8. Fur and feathers keep animals warm by scattering light
9. New monitoring technique reveals endangered animals
10. Living on islands makes animals tamer
11. Climate changes the distribution of plants and animals
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Animals with bigger brains, broader diets have better self control
(Date:7/27/2014)... global climate change to cut food supplies. But these ... between increasing temperature and air pollution specifically ozone ... new study involving researchers at MIT shows that these ... to take both warming and air pollution into account ... detail at global production of four leading food crops ...
(Date:7/27/2014)... have identified more than two dozen genetic risk ... had not been previously reported. The study, published ... by the National Institutes of Health (NIH) and ... "Unraveling the genetic underpinnings of Parkinson,s is vital ... complex disease, and hopefully, may one day lead ...
(Date:7/25/2014)... from the Terra satellite show the different areas that have ... Russia. The burn scars show up as reddish-brown splotches ... broken across the remote parts of Eastern Russia in the ... MODIS instrument, it is still possible to see the ... features noted below show the devastating number of fires that ...
Breaking Biology News(10 mins):Study: Climate change and air pollution will combine to curb food supplies 2Study: Climate change and air pollution will combine to curb food supplies 3NIH scientists find 6 new genetic risk factors for Parkinson's 2
... Health Sciences (NIEHS), part of the National Institutes of ... new grants totaling $21.25 million over a five-year period ... prevention and treatment of Parkinson,s disease and other related ... that affects nerve cells, or neurons, in several parts ...
... chairman of Singapore A*STAR,s Biomedical Research Council, has received ... cancer research through his discovery of p53 tumour suppressor ... one of the highest accolades from the Royal Society ... endeavour have made an impact on people,s lives worldwide. ...
... and Washington DC (16 September, 2008) SAGE-Hindawi today announced ... (JDB), the second open access title to be launched in ... The Journal of Dental Biomechanics will provide ... as it relates to dentistry. A growing area of study, ...
Cached Biology News:NIEHS invests $21.25 million to find environmental causes of Parkinson's disease 2NIEHS invests $21.25 million to find environmental causes of Parkinson's disease 3SAGE-Hindawi launch Journal of Dental Biomechanics 2
(Date:7/28/2014)... Research and Markets has announced the addition of ... to their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... to determine the size of a particle in a material ... the size of particles as it can affect the functionality ... determine the behavior and nature of a material, and for ...
(Date:7/25/2014)... (PRWEB) July 26, 2014 "Ischemic ... H2, 2014" provides data on the Ischemic Stroke ... provides elemental information and data relating to the ... , View full global Ischemic Stroke Research Report ... an overview of the trial numbers and their ...
(Date:7/25/2014)... by researchers from the University of Leicester has ... unlocking the potential to create new materials using ... been published in the prestigious academic journal ... technique to examine in rich detail the structure ... containing an acetylene molecule and a single helium ...
(Date:7/25/2014)... San Diego, CA (PRWEB) July 25, 2014 ... “Paws” For Your Pet with Lorry Young will be ... DVM, to talk about stem cell therapy in pets. ... discuss the benefits of stem cell therapy for pets suffering ... developments moving the Regenerative Veterinary Medicine industry forward. , Young ...
Breaking Biology Technology:Global Particle Size Analysis Market 2014-2018 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 2Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster 3Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 2Robert J. Harman, DVM, Founder and CEO of Vet-Stem, Inc. to Join New York Radio Host Lorry Young in Upcoming Episode of A “Paws” For Your Pet 3
... In chemical terms, nanoparticles have different properties from their big ... relation to their tiny mass and at the same time ... that lead to altered material properties. Ceramics made of nanomaterials ... is gold-coloured while a nanosliver of it is reddish. , ...
... VRNM ), a pioneer in the development and ... that it will release 2010 fourth quarter and year-end financial ... conjunction with the release, the Company will host a conference ... p.m. ET. The call may be accessed by ...
... SAN DIEGO, Feb. 22, 2011 Otonomy, Inc., ... disorders of the ear, today announced positive results ... multiple preclinical models of hearing loss.  Data demonstrated ... a sustained release gel formulation of the corticosteroid ...
Cached Biology Technology:3-D nanoparticle in atomic resolution 2Verenium Corporation to Announce Fourth Quarter and Year-End 2010 Financial Results 2Verenium Corporation to Announce Fourth Quarter and Year-End 2010 Financial Results 3Otonomy's OTO-104 Demonstrates Hearing Loss Protection and Hearing Recovery in Preclinical Studies 2Otonomy's OTO-104 Demonstrates Hearing Loss Protection and Hearing Recovery in Preclinical Studies 3