Are there universal expressions of emotion? - Sophie Zadeh

پکیج: TED Education / سرفصل: کشفیات ذهن / درس 11

Are there universal expressions of emotion? - Sophie Zadeh

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Learn more about TED-Ed Clubs here- http-// View full lesson- https-// The 40 or so muscles in the human face can be activated in different combinations to create thousands of expressions. But do these expressions look the same and communicate the same meaning around the world regardless of culture? Is one person's smile another's grimace? Sophie Zadeh investigates. Lesson by Sophie Zadeh, animated by Estudio Bacuri. Thank you so much to our patrons for your support! Without you, this video would not be possible! Abhijit Kiran Valluri, Mandeep Singh, Sama aafghani, Vinicius Lhullier, Connor Wytko, Marylise CHAUFFETON, Marvin Vizuett, Jayant Sahewal, Quinn Shen, Caleb ross, Elnathan Joshua Bangayan, Gaurav Rana, Mullaiarasu Sundaramurthy, Jose Henrique Leopoldo e Silva, Dan Paterniti, Jose Schroeder, Jerome Froelich, Tyler Yoshizumi, Martin Stephen, Justin Carpani, Faiza Imtiaz, Khalifa Alhulail, Tejas Dc, Govind Shukla, Srikote Naewchampa, Ex Foedus, Sage Curie, Exal Enrique Cisneros Tuch, Vignan Velivela, Ahmad Hyari, A Hundred Years, eden sher, Travis Wehrman, Minh Tran, Louisa Lee, Kiara Taylor, Hoang Viet, Nathan A. Wright, Jast3r , Arkadii Skaiuoker, Milad Mostafavi, Singh Devesh Sourabh, Ashley Maldonado, Clarence E. Harper Jr., Bojana Golubovic, Mihail Radu Pantilimon, Sarah Yaghi, Benedict Chuah, Karthik Cherala, haventfiguredout, Violeta Cervantes, Elaine Fitzpatrick, Lyn-z Schulte, cnorahs, Henrique 'Sorin' Cassus, Tim Robinson, Jun Cai, Paul Schneider, Amber Wood, Ophelia Gibson Best, and Cas Jamieson.

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The 40 or so muscles in the human face can be activated in different combinations to create thousands of expressions. But do these expressions look the same and communicate the same meaning around the world, regardless of culture? Is one person’s smile another’s grimace? Charles Darwin theorized that emotional expression was a common human feature. But he was in the minority. Until the mid-20th century, many researchers believed that the specific ways we show emotion were learned behaviors that varied across cultures. Personality theorist Silvan Tomkins was one of the few to insist otherwise. Tomkins claimed that certain affects— emotional states and their associated facial expressions— were universal. In the 1960s, psychologist Paul Ekman set about testing this theory by examining hundreds of hours of film footage of remote tribes isolated from the modern world. Ekman found the native peoples’ expressions to be not only familiar, but occurring in precisely the situations he would expect. Conversely, he ran tests with tribes who had no prior exposure to Western culture. They were able to correctly match photos of different facial expressions with stories designed to trigger particular feelings. Over the next few decades, further research has corroborated Darwin’s idea that some of our most important emotional expressions are in fact universal. The degrees of expression appropriate to a given situation can, however, vary greatly across cultures. For instance, researchers have studied facial expression in people who are born blind, hypothesizing that if expressions are universal, they would be displayed in the same way as sighted people. In one study, both blind and sighted athletes displayed the same expressions of emotion when winning or losing their matches. Further evidence can be found in our evolutionary relatives. Comparisons of facial expression between humans and non-human mammals have found similarities in the structure and movement of facial muscles. Chimpanzee laughter looks different from ours, but uses some of the same muscle movements. Back in the 60s, Ekman identified six core expressions. Anger is accompanied by lowered eyebrows drawn together, tense and narrowed eyes, and tight lips; disgust, by the lips pulled up and the nose crinkling. In fear, the upper white of the eyes are revealed as the eyebrows raise and the mouth stretches open, while surprise looks similar, but with rounded eyebrows and relaxed lips. Sadness is indicated by the inner corners of the eyebrows being drawn inwards and upwards, drooping eyes, and a downturned mouth. And of course there’s happiness: lips drawn up and back, and raised cheeks causing wrinkling around the eyes. More recently, researchers have proposed additional entries such as contempt, shame, and disapproval, but opinions vary on how distinct boundaries between these categories can be drawn. So if Ekman and other researchers are correct, what makes certain expressions universal? And why are they expressed in these particular ways? Scientists have a lot of theories rooted in our evolutionary history. One is that certain expressions are important for survival. Fear and surprise could signal to others an immediate danger. Studies of humans and some other primates have found that we pay more attention to faces that signal threats over neutral faces, particularly when we’re already on high alert. Expressions also could help improve group fitness by communicating our internal states to those around us. Sadness, for example, signals to the group that something’s wrong. There’s some evidence that expressions might be even more directly linked to our physiology. The fear expression, for instance, could directly improve survival in potentially dangerous situations by letting our eyes absorb more light and our lungs take in more air, preparing us to fight or flee. There’s still much research to be done in understanding emotional expression, particularly as we learn more about the inner workings of the brain. But if you ever find yourself among strangers in a strange land, a friendly smile could go a long way.

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