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An early 2010 paper by Christakis and Fowler documented, using an in-person experiment, that cooperation behavior can cascade to three degrees of separation. [36] A 2012 experiment involved 61,000,000 people who used Facebook and it showed the spread of voting behavior out to two degrees of separation. [ 37 ]
Nicholas A. Christakis (US: / ˌ n ɪ k ə l ə s k r ɪ ˌ s t ɑː k ɪ s / NIK-ə-liss kriss-TAK-iss) (born May 7, 1962) is a Greek-American [1] sociologist and physician known for his research on social networks and on the social, economic, biological, and evolutionary determinants of human welfare (including the behavior, health, and capabilities of individuals and groups).
Social network analysis as a field has become more prominent since the mid-20th century in determining the channels and effects of social influence. For example, Christakis and Fowler found that social networks transmit states and behaviors such as obesity, [30] smoking, [31] [32] drinking [33] and happiness. [34]
This table displays the top-rated primetime television series of the 2009–10 season as measured by Nielsen Media ... 13.3 3: Dancing with the Stars: ABC: 12.6 4: NCIS:
Beginning in the late 1990s, social network analysis experienced work by sociologists, political scientists, and physicists such as Duncan J. Watts, Albert-László Barabási, Peter Bearman, Nicholas A. Christakis, James H. Fowler, and others, developing and applying new models and methods to emerging data available about online social networks ...
Television series which originated in the United States and ended in the year 2009. Shows that originated in other countries and only later aired in the United States should be removed from this category.
In September 2009, Little, Brown & Co. published Connected: The Surprising Power of Our Social Networks and How They Shape Our Lives by Nicholas A. Christakis and James H. Fowler. [36] Connected draws on previously published and unpublished studies, including the Framingham Heart Study and makes several new conclusions about the influence of ...
From 2009 to 2013, Christakis was appointed Co-Master, together with her husband, the scientist Nicholas Christakis, of Pforzheimer House at Harvard College. [ 4 ] [ 5 ] In 2013, Christakis moved to Yale University , where she was appointed Lecturer in Early Childhood Education at the Zigler Center in Child Development and Social Policy at the ...