New study uncovers a "vicious cycle" between feeling less socially connected and increased smartphone use::Using smartphones for extended periods could negatively impact mental well-being and social connectedness, according to a recent study from researchers at the University of British Columbia and a media lab in Germany. Unlike earlier research that relied on self-reported data, this study from the Journal of Social and Personal Relationships employed direct tracking of screen time, revealing a "vicious cycle" in which feeling less socially connected leads to increased smartphone use. ...