paper

The Social Contagion Hypothesis: Comment on "Social Contagion Theory: Examining Dynamic Social Networks and Human Behavior"

arXiv:1207.1758

Abstract

I reflect on the statistical methods of the Christakis-Fowler studies on network-based contagion of traits by checking the sensitivity of these kinds of results to various alternate specifications and generative mechanisms. Despite the honest efforts of all involved, I remain pessimistic about establishing whether binary health outcomes or product adoptions are contagious if the evidence comes from simultaneously observed data.

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