The Effects Of Loneliness
 
prison solitary
 
Articles found on the web
 
Lonely Madness
The Effects of Solitary Confinement and Social Isolation on Mental and Emotional Health
[from Neurobiology and Behavior "Serendip" at Bryn Mawr college, Bryn Mawr, PA]
 
Cold shoulder
Silent treatment does more harm than good
[from Psychology at Purdue, West Lafayette, IN]

How well different individuals within the population can handle loneliness:
Bellcurve

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