Dynamic Social Networks Promote Cooperation in Experiments with Humans
November 29, 2011 | Journal Article
Frequently updating social networks can support cooperation in large groups.
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Dynamic Social Networks Promote Cooperation in Experiments with Humans
November 29, 2011 | Journal Article
Human interactions are not random but rather are structured in social networks, and ties in these networks are often dynamic, changing in response to the behavior of one’s social partners. This structure permits an important form of conditional acti ...
Social Network Concordance in Food Choice Among Spouses, Friends, and Siblings
November 1, 2011 | Journal Article
People are highly influenced by what the people in their social network eat.
How Our Friends (and Our Friends' Friends) Influence Our Health
September 1, 2011 | Story
A Profile of Nicholas Christakis, MD, PhD, MPH
Social Network Sensors for Early Detection of Contagious Outbreaks
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.
The Spread of Alcohol Consumption in a Large Social Network
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.
Cooperative Behavior Cascades in Human Social Networks
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.
The Spread of Sleep Loss Influences Drug Use in Adolescent Social Networks
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.
How Can Social Networks Help Improve the Health of Older Americans?
September 19, 2013 | Pioneering Ideas Blog Post
As we age, how can hairdressers, meals on wheels and others in our social network help us lead healthier lives? Learn about our new grant to the Business Innovation Factory.
Grantee Spotlight: Nicholas Christakis
July 24, 2013 | Pioneering Ideas Blog Post
The Pioneer team talks about social networks and big data with one of its innovative grantees, Nicholas Christakis, a professor at Yale University, Director of the Human Nature Lab and Co-Director of the new Yale Institute of Network Science.