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Smoking in a Social Network

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Submitted By pranit23
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SOST30202: Assessed Assignment 1
Literature: The collective dynamics of smoking in a large social network by Christakis N, Fowler J.
Social network analysis [SNA] is the mapping and measuring of relationships and flows between people, groups, organizations, computers, URLs, and other connected information/knowledge entities. The nodes in the network are the people and groups while the links show relationships or flows between the nodes. SNA provides both a visual and a mathematical analysis of human relationships (Orgnet, 2013). It is a study of social networks and how the network someone belongs to affects that individual and also how the individual selects or affects (influences) the network. This report will focus on the concepts namely influence, selection and homophily separately and also with reference to the literature, ‘The Collective Dynamics of Smoking in a Large Social Network’ by Christakis and Fowler (2008) and will then attempt to assess the results of the study and discuss the various questions in poses for its readers.
Andrew Lansley, Member of the British Parliament said, ‘’Peer pressure and social norms are powerful influences on behaviour, and they are classic excuses’’. This quote is very apt to what the literature in question talks about. Christakis and Fowler (2008) inspect the scale of person-to-person spread of smoking behaviour and the extent to which clusters of people quit together, using network analytic methods and longitudinal statistical models. They have based their study on a largely interconnected network of 12,067 people regularly and repeatedly examined from 1971 to 2003 as a part of the Framingham Heart Study. Over the period of more than 30 years of research it was found that there was a considerable decrease in the overall smoking population however the size of clusters of smokers remained almost the same suggesting that

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