This preview shows page 1. Sign up to view the full content.
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 ...
View Full Document
This note was uploaded on 11/07/2010 for the course SOC 1101 taught by Professor Mclaughlin during the Spring '07 term at Cornell.
- Spring '07