Research conducted over more than a decade indicates that loneliness increases self-centeredness and, to a lesser extent, self-centeredness also increases loneliness.
The findings by researchers at the University of Chicago show such effects create a positive feedback loop between the two traits: As increased loneliness heightens self-centeredness, the latter then contributes further to enhanced loneliness.
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Marijuana use is hot topic of debate recently. With states legalizing recreational use, more states putting medicinal use up for referendum, and even the NFL reconsidering its disciplinary policy on the issue, it is important for researchers (and data) across specialties to be a part of this debate. This project, published in Social Psychological and Personality Science, focuses marijuana’s ability to dampen social pain among the lonely.
There has been a growing concern that modern society is increasingly lonely. In 2006, a New York Times article "The Lonely American Just Got a Bit Lonelier" highlighted research that shows a decline in social engagement--people are less likely to join clubs, have fewer close friends, and are less likely to perceive others as trustworthy. However, studies have also shown an increase in extraversion and self-esteem, which suggests loneliness is decreasing.