So all life is a great chain, the nature of which is known whenever we are shown a single link of it.??? And so it is when social scientists are shown just a snippet of videotape of a family, going about their daily lives.Learn more about the UCLA Center on the Everyday Lives of Families at <a href="http://www.celf.ucla.edu/">http://www.celf.ucla.edu/</a> This Emotional Life is a co-production of the NOVA/WGBH Science Unit and Vulcan Pr