By Patrick Appel
From a study on happiness and social networks:
The happiness of an individual is associated with the happiness of people up to three degrees removed in the social network. Happiness, in other words, is not merely a function of individual experience or individual choice but is also a property of groups of people.
(hat tip: Mind Hacks)
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2008/12/happiness-is-contagious/207811/
