12 April 2010 Lecture

12 April 2010 Lecture - 12April2010Lecture...

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12 April 2010 Lecture 14:09 ~Six (6.2) Degrees of Separation Stanley Milgram’s “Small World Experiments” (1969) Sent a letter from: Random sample of Nebraska residents Stockholders in Nebraska Random sample of Boston  *get notes Questions about Milgram’s Experiment Selection bias? Only 26% reached destination. 74% died due to: Lack of interest Lack of contacts perhaps those that weren’t completed would have taken longer (Also only those willing to participate included) Only in USA? Replication of Milgram’s Results In 2001, Duncan Watts, a professor at Columbia University, attempted to recreate  Milgram’s experiment on the internet Used an e-mail message as the “package” that needed to be delivered 48,000 senders 19 targets (in different countries) (in 153 countries) watts found that the average number of intermediaries was around six Growth of Social Network Analysis Computers allow analysis of LARGE networks  New sources of data on networks email
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cell phone social networking sites blog or web links The Network Perspective Network analysis is the study of social relations among a set of actors Network researchers have developed a set of distinctive theoretical perspectives: 1. Focus on relationships between actors rather than attributes of 
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This note was uploaded on 10/21/2011 for the course COMM 125 taught by Professor Chompsky during the Spring '08 term at UPenn.

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12 April 2010 Lecture - 12April2010Lecture...

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