2014-12-11
[public] 91.9K views, 1.51K likes, 52.0 dislikes audio only
Is there a limit to the number of relationships we can maintain? And could that be changing with our ever-expanding online social networks?
SUBSCRIBE to BrainCraft! Click here: http://ow.ly/rt5IE Talking psychology, neuroscience & why we act the way we do.
BrainCraft is written and hosted by Vanessa Hill (https://twitter.com/nessyhill) for PBS Digital Studios
Research: Rachelle Oldmixon (https://twitter.com/RachelleIsHere)
Thanks to Jake Roper for helping film (https://www.youtube.com/jakerawr)
Follow BrainCraft on Twitter https://twitter.com/nessyhill or https://twitter.com/Brain_Craft
Tumblr http://braincraft.tumblr.com
Facebook https://www.facebook.com/Braincraft
Google+ https://www.google.com/+braincraftvideo
More BrainCraft: Can You See These Optical Illusions? /youtube/video/2xY9XbrsfWM
References:
Hill, R. A., & Dunbar, R. I. (2003). Social network size in humans. Human nature, 14(1), 53-72. http://courses.washington.edu/ccab/Hill%20and%20Dunbar%202003%20-%20Group%20size.pdf
Dunbar, R. I. (1998). The social brain hypothesis. brain, 9(10), 178-190. http://psych.colorado.edu/~tito/sp03/7536/Dunbar_1998.pdf
Dunbar, R. I. (1995). Neocortex size and group size in primates: a test of the hypothesis. Journal of Human Evolution, 28(3), 287-296. http://www.uvm.edu/~pdodds/files/papers/others/1995/dunbar1995a.pdf
Dunbar, R. I. M. (2012). Social cognition on the Internet: testing constraints on social network size. Philosophical Transactions of the Royal Society B: Biological Sciences, 367(1599), 2192-2201. http://rstb.royalsocietypublishing.org/content/367/1599/2192.full.pdf+html
Music by Poddington Bear:
"Tiny Spoons" http://freemusicarchive.org/music/Podington_Bear/Marimba_Vibraphone_Chimes__Bells/TinySpoons
"Low Jack" http://freemusicarchive.org/music/Podington_Bear/Backbeat/LowJack
"Filaments" http://freemusicarchive.org/music/Podington_Bear/Inspiring/Filaments
Images via Wikimedia Commons:
http://en.wikipedia.org/wiki/Western_red_colobus#mediaviewer/File:Piliocolobus_badius_0004.jpg
http://en.wikipedia.org/wiki/Proboscis_monkey#mediaviewer/File:Proboscis_Monkey_in_Borneo.jpg
http://en.wikipedia.org/wiki/Chimpanzee#mediaviewer/File:Schimpanse_Zoo_Leipzig.jpg