title: Social enhancement of laughter: an experimental analysis of some companion variables.
mesh_terms: D000367:Age Factors; D002648:Child; D002652:Child Behavior; D005260:Female; D006801:Humans; D007845:Laughter; D008297:Male; D012737:Sex Factors; D012904:Smiling; D012931:Social Environment; D012932:Social Facilitation; D014925:Wit and Humor as Topic