Laughter is the biological reaction of humans to moments or occasions of humor: an outward expression of amusement.
Laughter is subcategorised into various groupings depending upon the extent and pitch of the laughter: giggles, clicks (which can be almost silent), chortles, chuckles, hoots, cackles, sniggers and guffaws are all types of laughter.
Smiling may be considered a mild silent form of laughter.
Some studies indicate that laughter differs depending upon the gender of the laughing person: women tend to laugh in a more "sing-song" way, while men more often grunt or snort.
For more information about the topic Laughter, read the full article at Wikipedia.org, or see the following related articles:
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Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Laughter at Wikipedia.org. See the Wikipedia copyright page for more details. Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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