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HOW MANY FRIENDS DO

YOU HAVE ON FACEBOOK?
PICK A SCENARIO…

1. You are getting married.
2. You have one week to live.

Based on your choice, you are now planning a
celebration…
How many of these people on your Facebook list
would you genuinely want to invite?

* You are not bound by any social expectations (i.e.
Cousin Fred doesn’t need to be invited just because
he is your cousin).
COMPARE THOSE TWO
        NUMBERS

What interpretations can you make based on
the difference between these two numbers?
DUNBAR’S NUMBER
Dunbar’s number: 150
This number represents the number of people you can have in a group and
still feel a personal connection to.
"this limit is a direct function of relative neocortex size, and that this in turn limits
group size ... the limit imposed by neocortical processing capacity is simply on the number
of individuals with whom a stable inter-personal relationship can be maintained." On
the periphery, the number also includes past colleagues such as high school friends with
whom a person would want to reacquaint oneself if they met again.”
^ Carl Bialik (2007-11-16). "Sorry, You May Have Gone Over Your Limit Of Network Friends". The Wall Street Journal
Online. Retrieved 2007-12-02.

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Dunbars number

  • 1. HOW MANY FRIENDS DO YOU HAVE ON FACEBOOK?
  • 2. PICK A SCENARIO… 1. You are getting married. 2. You have one week to live. Based on your choice, you are now planning a celebration…
  • 3. How many of these people on your Facebook list would you genuinely want to invite? * You are not bound by any social expectations (i.e. Cousin Fred doesn’t need to be invited just because he is your cousin).
  • 4. COMPARE THOSE TWO NUMBERS What interpretations can you make based on the difference between these two numbers?
  • 5. DUNBAR’S NUMBER Dunbar’s number: 150 This number represents the number of people you can have in a group and still feel a personal connection to. "this limit is a direct function of relative neocortex size, and that this in turn limits group size ... the limit imposed by neocortical processing capacity is simply on the number of individuals with whom a stable inter-personal relationship can be maintained." On the periphery, the number also includes past colleagues such as high school friends with whom a person would want to reacquaint oneself if they met again.” ^ Carl Bialik (2007-11-16). "Sorry, You May Have Gone Over Your Limit Of Network Friends". The Wall Street Journal Online. Retrieved 2007-12-02.