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THIS EMOTIONAL LIFE

Your Friends' Friends Can Make You Happy

  • Aired: 01/04/2010
  • 01:30
  • Rating: NR
Dr. Nicholas Christakis, who studies the mathematical, social, and genetic determinants of social network structure, explains how happiness flows one person to another.
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Your Friends' Friends Can Make You Happy
Dr. Nicholas Christakis explains how happiness flows one person to another.
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