Chapter 1
The chemistry of a smile
Chapter 2
How the world translates joy
Chapter 3
The contagion of collective sparks
Chapter 4
Designing a daily spark
YOUR GOAL
Master of The science and secrets of joy
Ch 3 · The contagion of collective sparks
joy Contagious Laughter
A tiny spark, / We laugh out loud, / It's thirty times stronger in a crowd!
joy Floating colorful balloons and bursting bubbles drift past joyful faces in warm sunbeams.
BETA
joy Tap the rising sparks to discover how small moments of laughter create instant joy.
Fun Fact
Rat giggles: In 1997, neuroscientist Jaak Panksepp discovered that rats emit high-frequency, ultrasonic chirps when tickled, proving that playful joy exists in many mammals.
Glossary
emotional contagion (noun)
The phenomenon of having one person's emotions trigger similar feelings and behaviors in others. The Framingham Heart Study demonstrated that happiness spreads through social networks up to three degrees of separation.
The phenomenon of having one person's emotions trigger similar feelings and behaviors in others. The Framingham Heart Study demonstrated that happiness spreads through social networks up to three degrees of separation.
Quiz
In 2013, researchers in which country discovered that choir singers' heartbeats synchronize while singing?
Quiz
Which neuroscientist discovered in 1997 that rats chirp joyfully when playing and being tickled?
