According to research, there are approximately 20 different types of smiles, and surprisingly, not all of them are associated with happiness. For centuries, experts have dedicated their studies to unraveling the science behind this facial expression. In the past, one scientist even went to the extreme of subjecting individuals to repeated electrocution in order to elicit a smile. In today’s world, with the prevalence of emojis and social media, scientists have even more opportunities to explore and gain a deeper understanding of this subtle, non-verbal cue, as well as its various interpretations and misinterpretations.
The Facial Feedback Hypothesis: Insights from Darwin
Intriguing insights into the human emotions and their expression were unveiled by Charles Darwin in 1872. According to his observations, emotions that are freely expressed tend to be more intense, while those that are repressed appear more reserved. Building upon Darwin’s findings, a German study further explored the concept of facial feedback, revealing that the act of smiling not only provides clues about the underlying cause but also exerts a subtle influence on our emotional experience. Remarkably, this means that even when employed as a coping mechanism, a simple smile can impact how we react to a given situation.
Understanding the Duchenne Smile
The concept of the Duchenne smile was introduced by Guillaume Duchenne, a scientist from the 19th century, who conducted extensive research on facial expressions. This particular type of smile involves the coordinated movement of two specific facial muscles – the zygomatic major and the orbicularis oculi, resulting in a genuine expression of happiness or joy.
The zygomatic major muscle is responsible for raising the corners of the mouth, and its voluntary nature allows individuals to manipulate it to create a fake or forced smile. On the other hand, the orbicularis oculi muscle is involuntary, meaning we have no control over its activation. During a genuine Duchenne smile, this muscle lifts the cheeks and causes the appearance of crows feet around the eyes, adding an extra layer of authenticity to the expression.