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January 1, 2010 | Book
This book synthesizes the results from more than 50 years of empirical research, resulting in simple, powerful, and practical guidance for health professionals who want to know the most effective strategies for helping their clients to put long-term health-relevant behavior changes into practice.
November 1, 2011 | Journal Article
People are highly influenced by what the people in their social network eat.
September 1, 2011 | Story
A Profile of Nicholas Christakis, MD, PhD, MPH
August 9, 2011 | Program Result Report
A team at Harvard led by Nicholas Christakis, M.D., Ph.D., M.P.H, built several health-related social network data sets and used them to analyze the role social networks play in health and health care. Some findings achieved national media coverage.
September 15, 2010 | Journal Article
To evaluate whether such a friend group could indeed provide early detection, the authors studied a flu outbreak at Harvard College in late 2009.
April 6, 2010 | Journal Article
This article examines whether the alcohol consumption behavior of individuals is influenced by the alcohol consumption of people in their social network. A more nuanced understanding of the relationship between social networks and alcohol consumption is important because alcohol has complex health ramifications, both negative and positive.
March 23, 2010 | Journal Article
This article examines how an individual’s decision to cooperate or not cooperate in a game setting can influence subsequent interactions between other players. Little is known about whether cooperative or uncooperative behavior can have a cascading influence on the behavior of people who were not part of the original decision.
March 1, 2010 | Journal Article
In this study, the authors map the social networks of 8,349 adolescents in order to study how sleep behavior spreads how drug use behavior spreads and how a friend's sleep behavior influences one's own drug use.
March 1, 2013 | Journal Article
This framework provides a way for policy-makers and others to “make sense” out of the many national and local efforts to engage consumers in their own health care.