Women tilt their heads 12.3 degrees in selfies, men tilt them 8.2 degreeshttp://www.slate.com/blogs/future_tense/2014/02/20/selfiecity_from_lev_manovich_and_daniel_goddemeyer_analyzes_the_selfie.html …
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(When you are taking a selfie your visual focus is preoccupied so you need your auditory system to compensate, in case a predator tries to catch you off guard)
This! Predation risk is one of my main concerns when taking selfies in public, and why I practice so much at home.
