Summary: Hoorcollege 4

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• 1 Hoorcollege

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• What are 4 possible mechanism in mobilisation vs social media

  1. Social media as news source
  2. Social media as connections to organizations
  3. Social media as larger networks that can be mobilized
  4. Social media as channel for social influence

• What can spread in a network, give an example

  · Information (who knows what?)
  o Job vacancies
  o Investment opportunities
  · Opinions (who believes what?)
  o Rumors
  o Hoaxes
  · Behavior (who does what)
  o Innovations
  o Joining a riot
  · Disease (who gets what)
  o Influenza
  o HIV/aids
  o COVID
  · Etc. 

• Some things might look like influence but they are not. Which two are those and explain

  1. Selection (the network changes, so their ties also change)
  
  1. Contextual factors (external factors that make people think in similar ways). For example: red ones are smokers, blue ones aren’t. Then there is an information campaign that make that a lot of people stop smoking. So the fact that they are connected with each other doesn’t matter because it’s the campaign and not social influence

• The importance of bridges & the strength of weak ties (Granovetter). What is his theory on the strengt of weak and strong ties 

  - Strong ties: ties with high interaction frequency (close friends, core family ties, etc.)
  - Weak ties: low interaction frequency (acquaintances, distant family, etc.)
  - Claim: weak ties are more important for receiving novel information (e.g., for finding a new job) than strong ties

• What is a local bridge

  This

• What is a bridge

  This

• Claim granovetter: no strong tie is a bridge!

  This
  
  
  
  
  
  
  
  
  
  

• How does a weak tie work?

  · If bridges are important for receiving novel information…
  · … and if bridges are weak ties…
  · … then novel information is more likely to arrive via weak ties than via strong ties
  · “whatever it is to be diffused can reach a larger number of people, and traverse greater social distance, when passed through weak ties rather than strong” (Granovetter 1973, p. 1366)

• What is the finding of watts & strogatz 1998) on the small world effect?

  small world effect created by small number of random bridges in clustered network

• What is the difference between central & May and Centola (2010)

  This