A study by University College London tested their theory on 18,000 people and came up with this formula:
Hmm, which looks eerily similar to [cough]my[/cough] formula written 14 years ago:
Okay, their formula looks more complex and more academic, but the conclusions are about the same.
http://www.dhammawiki.com/index.php?tit ... ble_Truths
http://www.dailymail.co.uk/sciencetech/ ... ected.html
http://www.telegraph.co.uk/science/scie ... iness.html