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What is Social Network Analysis?

What is Social Network Analysis?. Structural Intuitions:. Alex Bavelas—Productivity, Leadership and Morale Torsten Hagerstrand—Information & Space Elizabeth Bott—Support and Control Peter Blau—Homophily Mark Granovetter—Social Organization. Bavelas’ Centrality. Bavelas’ Apparatus.

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What is Social Network Analysis?

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  1. What is Social Network Analysis?

  2. Structural Intuitions: • Alex Bavelas—Productivity, Leadership and Morale • Torsten Hagerstrand—Information & Space • Elizabeth Bott—Support and Control • Peter Blau—Homophily • Mark Granovetter—Social Organization

  3. Bavelas’ Centrality

  4. Bavelas’ Apparatus

  5. The greater the centrality: • The faster the solution • The fewer errors • The lower the morale

  6. Structural Intuitions: • Alex Bavelas—Productivity, Leadership and Morale • Torsten Hagerstrand—Information & Space • Elizabeth Bott—Support and Control • Peter Blau—Homophily • Mark Granovetter—Social Organization

  7. Census data on the spread of an innovation in space • Wave-like patterning • Assumed pair-wise process • Distance/decay in contact • Estimated by addresses of brides and grooms Hagerstrand—Spatial Diffusion

  8. Structural Intuitions: • Alex Bavelas—Productivity, Leadership and Morale • Torsten Hagerstrand—Information & Space • Elizabeth Bott—Support and Control • Peter Blau—Homophily • Mark Granovetter—Social Organization

  9. Loose Knit Tight Knit Bott: Support and Control

  10. Loose Knit Tight Knit Bott: Support and Control

  11. Structural Intuitions: • Alex Bavelas—Productivity, Leadership and Morale • Torsten Hagerstrand—Information & Space • Elizabeth Bott—Support and Control • Peter Blau—Homophily • Mark Granovetter—Social Organization

  12. Blau’s Homophily [Moreno Data]

  13. Structural Intuitions: • Alex Bavelas—Productivity, Leadership and Morale • Torsten Hagerstrand—Information & Space • Elizabeth Bott—Support and Control • Peter Blau—Homophily • Mark Granovetter—Social Organization

  14. BREAK

  15. Graph Ordered pair: G = <A, R>

  16. Symmetric If <a1 , a 2>  R then <a2 , a 1>  R For all A, if a1 R a 2then a2 R a 1

  17. Nonsymmetric • For at least 1 element in A, a1 R a 2 anda2 R a 1 • For at least 1 element in A, a1 R a 2 anda2 ~R a 1

  18. Binary 1922 Almack Valued 1999 Brewer & Webster

  19. Existing Records 1986Breiger & Pattison Subjects’ Reports 1992Fagan 1999Brewer & Webster

  20. Systematic Observation 1988Freeman, Freeman & Michaelson Recording Devices 2004Bulkley & van Alstyne

  21. Experimental Manipulation 1951Leavitt Ethnographic Notes 1956Bott

  22. Free Listing 1999Brewer & Webster Forced Choice 1999Brewer & Webster

  23. Card Sorts 1988Freeman, Freeman & Michaelson Spatial Tasks 1994Freeman

  24. Reports about Self 1922Almack Reports about Everyone 1987Krackhardt

  25. Systematically Compared 1976Killworth & Bernard

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