Chimp facial expressions

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Behavioral researchers led by Lisa Parr, PhD, director of the Yerkes National Primate Research Center Cognitive Testing Facility and Chimpanzee Core, have found understanding chimpanzee facial expressions requires more attention to detail than researchers initially thought. Correctly interpreting the subtleties within chimpanzees' facial expressions may be key to understanding the evolution of human emotional communication. According to Parr, "This discovery is an important step to help researchers recognize facial movements and understand why they are important. While some expressions, such as a playful look, can be identified using a single feature, other expressions, such as when a chimp bares his teeth, require looking at numerous characteristics within the face, including the eyes and lips.
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Chimpanzee flexibly use facial expressions and vocalizations

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Chimpanzee flexibly use facial expressions and vocalizations

Published in Social cognitive and affective neuroscience Skip to search form Skip to main content. Understanding chimpanzee facial expression: insights into the evolution of communication. Chimpanzees display a complex, flexible facial expression repertoire with many physical and functional similarities to humans.
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Chimpanzee Facial Expressions Are Helping Researchers Understand Human Communication

In a study that seems to replicate common sense, Japanese scientists have shown that chimpanzees can read the facial expressions of other chimpanzees. The scientists showed pictures of chimpanzees displaying a variety of facial expressions to Mizuki, an year-old female chimpanzee living at the Hayashibara Great Ape Research Institute in Okayama, Japan. The results revealed a wide swing of activity when researchers showed Mizuki pictures of chimpanzees displaying aggressive facial expressions the affective pictures above.
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To understand the evolution of emotional communication, comparative research on facial expression similarities between humans and related species is essential. Chimpanzees display a complex, flexible facial expression repertoire with many physical and functional similarities to humans. This paper reviews what is known about these facial expression repertoires, discusses the importance of social organization in understanding the meaning of different expressions, and introduces a new coding system, the ChimpFACS, and describes how it can be used to determine homologies between human and chimpanzee facial expressions. Finally, it reviews previous studies on the categorization of facial expressions by chimpanzees using computerized tasks, and discusses the importance of configural processing for this skill in both humans and chimpanzees.
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