Though it may seem like a paradox, children do not laugh for joy. Scientific studies, including my own, show that there is something much deeper than joy or mirth in a child’s laughter. Adults’ ...

‘LAUGHTER’ is a word, we are told by the philologists, that is a distant cousin of the Greek κλωσσϵιυ, ‘to cluck like a hen,’ and also of κρáζϵιυ, ‘to croak.’ But we need not go any further than our ...