In the current study, the scientists let participants view images of faces pre-rated as most, intermediate, or less attractive. This was done after participants received a small dose of morphin, a drug that stimulates the reward system. They also spent more time looking at the eyes of the people in the pictures.
Importantly, we observed the opposite behaviors when we blocked the reward system with another drug, such that, for instance, our participants gave lower ratings to the most attractive faces," explains Chelnokova. The researchers saw no effect from the drugs when participants viewed images of intermediate or less attractive faces.
Is it possible that the human brain has evolved to reinforce behaviors that are evolutionary favorable for us as a species? It very well could have, according to the scientists. We can speculate that there is an evolutionary reason behind our brain enjoying to look and wanting to look more at an attractive face," says Olga Chelnokova. She emphasizes though that the reward system gives an immediate response, an extra pleasure, but that the system's response does not determine the path for our behavior in the long term.
Similarly, there are many factors that contribute to a good relationship much more than facial attractiveness. But we learn more about other qualities as we get to know the other person better. Another study in her thesis let participants look at three-dimensional pictures of faces while tracking their eye movements. The scientists recorded which parts of the face participants looked at when asked to recognize the faces.
There is no simple answer. Researchers have, however, begun probing how beauty affects the behavior of humans and other animals. Through this work, especially, they have discovered some of the features that make an individual attractive to others.
Scientists are also learning that there may be a practical side to our obsession with beauty. A pretty face may belong to a healthier person. Or it may simply be easier for our brains to process. Different people will usually agree on which faces those are. But few can say precisely why those faces seem so beautiful. Researchers have begun turning up some answers, though.
Such as symmetry. Faces that we deem attractive tend to be symmetrical, they find. Attractive faces also are average. In a symmetrical face, the left and right sides look like each other. But our eyes read faces with similar proportions on both sides as symmetrical.
He is a psychologist at the University of Stirling in Scotland. In the end, many of these faces seem symmetrical. And we then like it. This averageness, Little points out, refers to how similar a face looks to most other faces in a population.
And, in general, people find such faces quite attractive. People find her most attractive when that distance is just under half of the width of the face. It should be just over one-third the height of her face. Both those distances match the population average, or are close to it. Are we born with a preference for certain kinds of faces? Or is it just something that people learn, without realizing it? To find out, psychologist Judith Langlois and her team at the University of Texas in Austin worked with young children and babies.
Some of their young recruits were just two to three months old. The researchers showed each baby photos of two faces. One face was more attractive than the other. The scientists then recorded how long the infants looked at each face. Babies spent longer viewing the attractive faces than the unattractive ones.
That meant they preferred the pretty faces, says psychologist Stevie Schein. She works with Langlois. These findings suggest that people prefer pretty faces very early in life.
That experience can make a difference. So infants quickly come to prefer these faces, Schein says. Some research suggests that we tend to find people who look like our opposite sex parent attractive. According to research from St Andrews, we are attracted to the features that our parents had when we were born, possibly because we see them as our first caregiver, and associate positive feelings with their features.
In one study from , researchers asked participants to rate how attractive faces of different ages were. Also, in a follow up study , a sample of men and women showed people were more likely to have romantic partners who had the same eye and hair colour as their opposite-sex parents. For you. World globe An icon of the world globe, indicating different international options.
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