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1. https://www.livescience.com/9430-study-laughter-contagious.html - (Trust Score 8/10)
- A study by Sophie Scott at University College London found that laughter is contagious, with the brain responding to the sound of laughter and preparing facial muscles to join in.
2. https://www.bswhealth.com/blog/why-is-laughter-contagious-and-7-ways-to-lighten-up-your-day - (Trust Score 7/10)
- The article explains that laughter is contagious due to its social nature and the physiological response it triggers in the brain, particularly in the premotor cortical region.
3. https://www.psychologicalscience.org/news/laughter-really-is-contagious—and-thats-good.html - (Trust Score 8/10)
- This source also confirms that laughter is contagious, attributing it to the social phenomenon and the brain's response to laughter, which primes facial muscles to join in.