Contagious yawning Can, Why?

You ever notice people yawn when in a crowd? Usually, after which evaporates in a crowd, soon there will be someone else yawn, yawn and nothing else, and so on. This makes many people believe that contagious yawning may be a chain. Why?

Exactly causes yawning, until now I have found. Expressed the opinion that many states that yawning occurs because of lack of oxygen in the body. Usually, people can evaporate when the condition of the body tired, lazy, bored, or sleepy. These habits do not know the age evaporate. Ranging from newborns to the elderly, have a habit of evaporating. Why is it transmitted? So far have not found a definitive answer to that question. Recent research carried out by Professor of Psychology at the University of Dexter, Philadelphia, United States (U.S.), Steven Platek. 

Reports from these studies, among others, published by the journal Cognitive Brain Research. In short, Shine magazine, quoting the report. In the report the results of his study, Platek said that contagious yawning could be due to an empathetic effect in the event. Evaporating process, he said, similar to laugh. When no one was laughing in a crowd, usually someone else will emerge who responded with a laugh, too.

"yawn contagion effects arise not only from the vision, but can also arise from the hearing, read the article about yawning, or even thinking about yawning," Platek said. He and his research team believes that the spread of yawning is a way of modeling primitive human feelings related to other human beings. not only contagious, it appeared that some studies also revealed that the activity of yawning can not be controlled. The proof, when someone has the desire evaporates, it will be very difficult to hold. Usually, he just could not resist to open his mouth when he yawned.

Source: Republika.co.id