Laughter
Laughter
Laughter (/ˈlæftər, ˈlɑːftər/) is a physical reaction in humans and some other species of primate, consisting mainly of rhythmic, often audible contractions of the diaphragm and other parts of the respiratory system.
Etymology
The term "laughter" comes from the Old English "hleahtor", which is derived from the Proto-Germanic "hlahtraz". It is associated with the Old Norse "hlæja" and the German "lachen", both meaning "to laugh".
Physiology
Laughter is a part of human behavior regulated by the brain, helping humans clarify their intentions in social interaction and providing an emotional context to conversations. Laughter is used as a signal for being part of a group—it signals acceptance and positive interactions with others.
Psychology
In psychology, laughter is often classified as a phenomenon of emotion due to the various emotional responses that it can provoke in people. It is also considered a social bonding mechanism between individuals.
Health
Laughter has been shown to have beneficial health effects. It has been shown to lead to reductions in stress hormone levels and enhance the activity of the immune system. It also increases pain tolerance, improves mood, and may even increase longevity in humans.
Related Terms
- Humor: The quality of being amusing or comic, especially as expressed in literature or speech.
- Giggle: A light, silly laugh.
- Chuckle: A quiet or suppressed laugh.
- Guffaw: A loud and boisterous laugh.
External links
- Medical encyclopedia article on Laughter
- Wikipedia's article - Laughter
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