Nonetheless, greater use of the Internet was associated with declines in participants’communication with family members in the household, declines in the size of their social circle, and increases in their depression and loneliness. These findings have implications for research, for public policy, and for the design of technology.
Read (an excerpt from) Internet Paradox: A Social Technology That Reduces Social Involvement and Psychological Well-Being? and a follow up (pdf) from some of the same authors. Commentary from the blog Tasty Research.