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Chimpanzees may be less impulsive than adolescent humans, according to psychology study



An American study found that adolescent chimpanzees are more patient and less impulsive than humans of the same age.

Recent research done by American Psychological Association Chimpanzees between the ages of 8 and 15 were found to be less impulsive than adolescent humans.

“Adolescent chimpanzees are, in some ways, facing the same psychological storms as human adolescents,” said the principal investigator. Alexandra Rosati, associate professor of psychology and anthropology at the University of Michigan, said: .

Authors of studies published online at Journal of Experimental Psychology they found it “Some key features of human adolescent psychology are also found in our closest primates.” Rosati told of several animals whose DNA is 98.6% identical to human DNA.

According to a press release, puberty in chimpanzees can live up to 50 years, occurs between the ages of 8 and 15, and, like humans, Shows rapid changes in hormone levels, begins forming new bonds with peers, becomes more aggressive, and competes for social status .

taste test

Researchers conducted two tests on 40 wild-born chimpanzees living in a reserve in the Republic of the Congo.

In the first test, adolescent and adult chimpanzees were allowed to choose from two vessels. One always contained peanuts, a food they loved very much, and the other contained cucumber slices, which they disliked, or banana slices, which they disliked. I love it.

A chimpanzee can safely get a peanut or risk becoming a cucumber to take a chance on the coveted banana. I have no appetite.

The chimpanzee’s emotional reactions and vocalizations were recorded. moaning, screaming, table banging, scratching as well as collecting saliva samples to track hormone levels.

During several tests, Adolescent chimpanzees made more risky choices than adults, but both responded negatively The same is true when we receive cucumbers.

Chimpanzee “marshmallow test”

In the second test, inspired by the so-called “marshmallow test” performed on human children, The chimpanzee can either receive 1 banana slice immediately or wait 1 minute before receiving 3 slices. There was no difference in the percentage of those who chose the latter.

of Adolescents tend to be more impulsive than adults and are more likely to accept immediate rewards. said the study.

“Previous studies have shown that chimpanzees are very patient compared to other animals. It shows that you are mature.” Rosati said.

But adolescent chimpanzees weren’t content to wait for extra banana slices. More tantrums during the 1-minute delay than adult chimpanzees .

The risky behavior seen in both adolescent chimpanzees and humans seems to have deep biological roots. Increased impulsive behavior may be unique to human adolescents Rosati said.

Source: Biobiochile

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