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Group Performance (Brainstorming (Osborn (1957) (Quantity, Quality,…

- - - - Build on others ideas
  - - - Fear of social embarrassment
      - Conformity pressures
      - Status systems
    - - Reinforcement for contributing
      - Social support
      - Cross stimulation
  - - - Free riding
      - Production matching
    - - Mutual production blocking
      - Evaluation apprehension
  - - - Regulating waiting time
        
        Worse for predictable and controlled
      - External storage didn't help
      - More time doesn't help
- - - - Mere presence
        
        General drive state
        
        Dominant response
  - - - Routine/simple
    - - Novel/complex tasks
    - - Putting on shoes enhanced
      - Put on lab coat, put on large shoes socks, inhibited
    - - Robinson Staverly and Cooper
        
        Positive expectations
        
        Enhanced by others
        
        Negative expectations
        
        Inhibited by others
- - - - Maximises effort not accuracy
      - Unitary
      - Additive
    - - Motivation loss
  - - - Williams
  - - - Williams & Karau (1991)
    - - Gabreyana (1985)