24. @sinanaral
The “Reflection Problem”
Human behaviors cluster in
network space and time…
but is this because of
peer influence or
alternate explanations?
25. @sinanaral
“Obesity is Contagious”
Christakis & Fowler (2007)
26. @sinanaral
Homophily
“Birds of a feather,
flock together”
Robert Burton (1577-1640)
27. @sinanaral
“(People) love those who
are like themselves”
Aristotle
36. @sinanaral
The Setup
App
Randomly Enabled Viral Messaging.
Observed the Adoption and Use of the App by Friends of
Control and Experimental Group Users.
44. @sinanaral
Which Features Spread Contagion Best?
Personal Passive
Invitations Awareness
Influence Per
Message
↑6% ↑2%
Global Diffusion ↑98% ↑246%
Stickiness ↑17% 0%