Why might children laugh more often than adults

Explanation:

We often hear the claim that children laugh much more frequently than adults do. Many numbers are thrown around, but I've heard some claims that children laugh more than 300 times a day, whereas adults laugh less than 20 times a day. The implication is that somehow people become too serious and lose the ability to laugh while growing up, and adults should try to regain the lost joy of childhood by becoming more playful and humorous. Although I certainly agree that we adults are often too serious and we might benefit from laughing more often, I have not been able to find the scientific research that these numbers supposedly came from. I have found only a handful of studies that examined frequencies of laughter in children and adults, and these do not support the numbers typically cited. In fact, the existing studies suggest that adults may actually laugh more often than children!

Children might laugh more often than adults because children have more sense of humor.

Explanation: The children have more experience growing up and adults don’t.