Dunbar’s Number, the theory that we are only capable of having 150 friendships at any one time, remains surprisingly robust in the digital age. Helen Coffey investigates whether ignoring in-built ...

Cornell study finds number has dropped in 25 years, from 3 to 2. Nov. 8, 2011 — -- We may "friend" more people on Facebook, but we have fewer real friends-- the kind who would help us out in ...

A true friendship is worth a thousand superficial acquaintances. At least that's what a recent study conducted by Professor Nathalie Pennington of Colorado State University, in partnership with the ...