technology-news

Human yawning becomes contagious for chimps with age

Washington, Oct 17 : A new study has revealed that as sanctuary-kept chimpanzees grow from infant to juvenile, they develop increased susceptibility to human yawn contagion, possibility due to their increasing ability to empathize.


Scientists examined the extent to which two factors affected chimpanzees' susceptibility to yawn contagion: their age, and their emotional closeness to the person yawning.

Thirty-three orphaned chimpanzees, 12 infants 1 to 4 years old, and 21 juveniles 5 to 8 years old, were included in the trials.

A trial sequence consisted of 7 five-minute sessions: a baseline session, followed by three experimental sessions, where the human repeatedly either yawned, gaped or nose-wiped, and three post-experimental sessions, where social interactions continued without the inclusion of the key behaviours.

Researchers found that yawning, but not nose-wiping, was contagious for juvenile chimpanzees, while infants found neither yawning nor nose-wiping contagious.

Chimpanzees appear to develop susceptibility to interspecies contagious yawning as they grow from infant to juvenile, possibly due to their developing ability to empathize with the person yawning. Emotional closeness with the yawning human did not affect contagion.

According to researchers, the results of the study reflect a general developmental pattern, shared by humans and other animals. Given that contagious yawning may be an empathetic response, the results can also be taken to mean that empathy develops slowly over the first years of a chimpanzee's life.

The study is published in journal PLOS ONE.

--ANI (Posted on 18-10-2013)

technology-news headlines

NASA satellites show drought may take toll on Congo rainforest

Video games of the future to adapt to players' mood

World's oldest woman's blood hints at lifespan limits

How ravens maintain their social relations

Microbes help understand evolution of human language

Radiation exposure puts astronauts at risk of cognitive impairment: Study

Iceberg larger that island of Guam drifts away from Antarctic glacier

Manned mission to Mars necessary for our species to survive, says NASA chief

Gene therapy helps reverse loss of memory in mice suffering from Alzheimer's

New technology helps detect when drivers are about to nod off

Technology to catch dozing drivers on the go

This space selfie not to be missed!

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top