Just How Much Power Do We Have Over Our Choices?

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Jonah Berger discusses "Invisible Influence: The Hidden Forces that Shape Behavior," about how other people's behavior influences our own choices.

Whether or not we're aware of it, we're influenced by the behavior of other people in countless ways, according to best-selling author Jonah Berger. In his latest book, Invisible Influence: The Hidden Forces that Shape Behavior, Berger reveals how and why our most important personal decisions can often be influenced by strangers, social trends and popular opinion.