Summary: University of Chicago research psychologist Cacioppo shows in studies that loneliness can be harmful to our overall well-being. Loneliness, he says, impairs the ability to feel trust and affection, and people who lack emotional intimacy are less able to exercise good judgment in socially ambiguous situations; this makes them more vulnerable to bullying as children and exploitation by unscrupulous salespeople in old age. But Cacioppo and Patrick (editor of the Journal of Life Sciences) want primarily to apply evolutionary psychology to explain how our brains have become hard-wired to have regular contact with others to aid survival. So intense is the need to connect, say the authors, that isolated individuals sometimes form parasocial relations with pets or TV characters.
