1. 
   gelotology
   gelotology 1. A psychological and physiological study of laughter. 2. The study of humor and laughter, and its effects on the body.
   Found op http://www.wordinfo.info/words/index/info/view_unit/889/2
   
   
2. 
   Gelotology
   Gelotology (from the Greek gelos, meaning laughter) is the study of laughter and its effects on the body, from a psychological and physiological perspective. Its proponents often advocate induction of laughter on therapeutic grounds in complementary medicine. The field of study was pioneered by Wil...
   Found op http://en.wikipedia.org/wiki/Gelotology
   
   

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