Yawning is getting "Utsuru" from 5 years old children

The peopleYawnIf you look at doing it, is it that everyone has the experience of yawning myself as well?

It has long been known that yawning "propagates", but in a recent study this "contagion of yawn" is seen not only in humans but also in chimpanzees and dogs, not only from homologous animals but also from owners It has also been confirmed that yawning infects dogs, spreading beyond species.

In ScotlandStirling UniversityStudies by psychologists and others revealed that infants are never yawned from people and only yawn themselves spontaneously. This is a very interesting phenomenon that hits a new light towards the development of the human brain and the reason why living things yawn.

Details are as below.Babies and young children are immune from 'catching' yawns - Telegraph

In a study by psychologist Jim Anderson of Stirling University et al., It became clear that in young people young people begin to take yawning from 5 years old, yawning does not spread out in younger infants. Thesis isBiology LettersIt is published in the magazine.

In my research, firstly, when parents of 22 infants took observation records of children's yawning for a week, there seemed to be no records of "yawn yawn from someone". In addition, although the number of yawning times was few compared with adults and older children, the number of yawning yawn showed a typical pattern that it rises again as soon as it gets up in the morning and increases again before going to bed at night.

Next, although experiments showed video showing yawning of other children, adults and various animals to infants and video showing how young mothers of young people yawned, the phenomenon of "yawning" the yawn again It seems that it was not seen.

In another experiment, a small number of children began yawning at the yawning video from the age of 5 and turned out to be yawning at the same level as adults at the age of 11 about.

In psychology we know that young people are more prone to yawning from other people who have a higher "empathic ability", but this time the results show that young people will be yawned from their opponent (mother) with a strong emotional relationship It does not indicate it. "By research so far, one of the parts of the child's brain that continues to develop after birthFrontal lobeI know that there is. Frontal lobes are part of social decision-making and the ability to sympathize with people, "Dr. Anderson says.

"Yawn" is one of the familiar physiological phenomena experienced by everyone, but the reason why human beings and animals are yawning is not yet clearly elucidated. In general, it is thought that yawning will occur reflectively because oxygen sucks in the lungs as oxygen concentration in blood drops, but if you breathe in deeply without yawning, the same effect will be obtained, The scientific argument of this theory seems to be poor.

In order to elucidate the mechanism of yawning, you first need to know the various effects of yawning. It is not likely that there are many people who have actually experienced it when they got on an airplane that yawns had the effect of equalizing the air pressure in the ears? Another study has suggested that yawning raises attention and has the effect of "cooling" the brain.

However, not only these biological aspects but also psychological aspects suggest that yawning has various effects. Recently, various studies showing that yawning is a "social cue (cue)" to convey a message from person to person and from animals to animals are gathering, "It is about time to go to bed Some researchers think that they developed from the sign that they developed as a cue to tell them that they developed "as sexual appeal to you" rather than anthropologists.

Dr. Anderson says, "There will not be one main work of yawning, as young people tend to endure yawn as much as possible because yawning is considered rude and bad manners, but maybe yawning It is probably just a story that is unconsciously judging that "Yawning will be allowed even if I yawn because he yawned."