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The Dunbar Number, Unstructured Trust, and Why Groups Don't Scale (Bay Chi 2006-07-11)
 

The Dunbar Number, Unstructured Trust, and Why Groups Don't Scale (Bay Chi 2006-07-11)

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Presentation to BayChi on July 11th 2006. ...

Presentation to BayChi on July 11th 2006.

We are relying increasingly on internet-mediated social software tools for our day-to-day interaction with other people. To design this type of software, we must better understand the psychology and social dynamics of individuals in groups. Awareness of what makes us human is now often as important to the success of the software as is understanding software architecture and code. One particular sociological factor, the Dunbar Number, is useful in understanding why groups don't scale at different group sizes. A deeper awareness of why groups have different behaviors, the nature of unstructured trust, and which current tools appear to work best at different scales, can give guidance to both the online facilitator and the social software designer.

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    The Dunbar Number, Unstructured Trust, and Why Groups Don't Scale (Bay Chi 2006-07-11) The Dunbar Number, Unstructured Trust, and Why Groups Don't Scale (Bay Chi 2006-07-11) Presentation Transcript

    • July 11, 2006 The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Christopher Allen
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Christopher Allen
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar
    • The Dunbar Number Groups Size & Neocortex Ratio
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al.
    • The Dunbar Number Survival Groups
    • The Dunbar Number Survival Groups
    • The Dunbar Number Survival Groups
    • The Dunbar Number Survival Groups
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al. Unstructured Trust
    • Unstructured Trust No trust
    • Unstructured Trust Familiar Stranger
    • Unstructured Trust Conversations for Discovery
    • Unstructured Trust Casual Friends
    • Unstructured Trust The Band
    • Unstructured Trust The Crowd
    • Unstructured Trust The Mob
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al. Unstructured Trust So what are the limits to group size?
    • Limits to Group Size Ultima Online Sizes of Guilds
    • Limits to Group Size Ultima Online Histogram of Sizes of Guilds
    • Limits to Group Size World of Warcraft Subgraph Map of a Guild
    • Limits to Group Size World of Warcraft Max Subgraph Size of all Guilds
    • Limits to Group Size World of Warcraft Subgraph Ratio of all Guilds
    • Limits to Group Size Group Satisfaction
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al. Unstructured Trust So what are the limits to group size? Group size problems
    • Concept: Group Size Problems Too Few People Insufficient critical mass Unable to sustain conversation Feels like you are alone Lack of commitment or leadership Groupthink & Echo Chamber
    • Concept: Group Size Problems Too Few People Insufficient critical mass Unable to sustain conversation Feels like you are alone Lack of commitment or leadership Groupthink & Echo Chamber Too Many People Too noisy, not enough signal Lack of trust, unequal trust Cliques & bad gossip Inappropriate politics Other social contract failures Flames Trolls Tragedy of the commons
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al. So what are the limits to group size? Unstructured Trust Group size problems Appropriate social software for different group sizes Cycle of Flames
    • Concepts: Cycle of Flames Cycle of Flames Text is missing emotional cues We over-interpret emotions We reply at similar intensity (Emotional Contagion) We empathize less when emotions are intense Thus “Cycle of Flames” Irony ➫ Sarcasm ➫ Insult ➫ Flame!
    • Concepts: Cycle of Flames Cooling Flames Avoid emotional words should, didn’t, forgot Avoid irony and sarcasm When necessary, use smilies to avoid confusion ;-) Don’t escalate Educate
    • The Dunbar Number, Unstructured Trust & Why Groups Don’t Scale Dr. Robin Dunbar Gladwell, Watts, Buchanan, et al. So what are the limits to group size? Unstructured Trust Group size problems Appropriate social software for different group sizes
    • Concept: Appropriate Size Small Groups (2-12 active, best for 4-9 active) Chat Room Teleconference w/Backchannel Cooperative Editor Discussion List - Flat Blogs - Shared only to Private Blogs - Group Authored
    • Concept: Appropriate Size Small Groups (2-12 active, best for 4-9 active) Chat Room Teleconference w/Backchannel Cooperative Editor Discussion List - Flat Blogs - Shared only to Private Blogs - Group Authored Medium Groups (13-150 active, best for 25-80 active) Instant Message Avatar Chat Discussion List - Threaded Wiki - Single Workspace
    • Concept: Appropriate Size Small Groups (2-12 active, best for 4-9 active) Chat Room Teleconference w/Backchannel Cooperative Editor Discussion List - Flat Blogs - Shared only to Private Blogs - Group Authored Medium Groups (13-150 active, best for 25-80 active) Instant Message Avatar Chat Discussion List - Threaded Wiki - Single Workspace Large Groups (150+ active) Discussion List - Reputation Filterered (i.e. SlashDot) Wiki - Multiple Workspaces Blog - Public Social Network
    • Blog at http://www.LifeWithAlacrity.com ChristopherA@LifeWithAlacrity.com