04-04-2012, 11:49 PM
IIRC, to a scientist happiness is measurable as how well you feel you're doing compared to those around you, there was a study from an Ivy League about it not too long ago. I'll see if I can find a link. I don't agree/disagree with it, but they did have parameters for the measurement of it, so it wasn't 'squishy' to them.
Hardcore Diablo 1/2/3/4 & Retail/Classic WoW adventurer.