Lecture_18

Lecture_18 - Introduction Introduction to Sociology Part...

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Unformatted text preview: Introduction Introduction to Sociology Part III: The Architecture of Society Lecture 18: Network Properties and Positions and Positions Wednesday, April 15 April 15 Important Important Network Properties - Connected components: (Usually large) groups of actors who are (Usually directly or indirectly connected to each other directly or indirectly connected to each other - Clusters: sets of relatively densely interconnected actors sets • Cliques: smaller, completely connected, exclusive groups of l people people who often share attitudes and interests - Structural holes: gaps between two poorly connected (or holes gaps between two poorly connected (or unconnected) unconnected) clusters or components in a network - Bridges: ties that span structural holes A hypothetical social network, hypothetical with components color-coded color- Components Components of a network of romantic and sexual at Sc relations at “Jefferson High School,” 1994 Clusters in a high school friendship network Clusters (Yellow = white, Green = black, Pink = other) General General Causes of Clustering - Actors’ desires to achieve cognitive consistency (“I should like my friends’ friends”) friends friends - Peer pressure (“You should like my friends”) - Disproportionate exposure to already-embedded contacts - Mutual involvement in similar social settings/activities 8989-person component of the Alberta sexual network, linked to a motel bar Some cliques in grade school friendship network Some cliques in a grade school friendship network Aspects Aspects of Cliques - Small in size - Densely interconnected - Exclusive • Subjugation of non-group members non- High agreement among members - Often include “leaders” Hypothetical Hypothetical social network with a bridge highlighted High school friendship network (with structural hole between clusters) network Important Important Network Positions - Isolate: an actor who has no ties in a network an - Hub: an actor who has a large number of ties relative to others an - Boundary spanner: an actor who has bridging ties that span an structural structural holes between clusters or components - Cutpoint: an actor who connects other actors to a larger an component Some Some hubs of a needle-sharing network among needleintravenous drug users, early 1990s Hypothetical Hypothetical social network with boundary spanners between two large components highlighted Hypothetical Hypothetical social network with cutpoints only highlighted ...
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This note was uploaded on 11/07/2010 for the course SOC 1101 taught by Professor Mclaughlin during the Spring '07 term at Cornell.

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