Science. 2003 Oct 10;302(5643):290-2.
Does rejection hurt? An FMRI study of social exclusion.
Eisenberger NI, Lieberman MD, Williams KD.
Trends Cogn Sci. 2004 Jul;8(7):294-300.
Why rejection hurts: a common neural alarm system for physical and social pain.
Eisenberger NI, Lieberman MD.