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Why do we love people we're related to? Compared to strangers, why do we feel such a deep sense of connection with our family members? Sure, they're nice to us, we take care of each other, and we often live with them, but there has to be a deeper biological reason. That reason, unsurprisingly is evolution. In this video, I explain why taking care of our family, or even dying for them, makes sense in the eyes of evolution.
This video covers more than a half century of evolutionary biology theory and observation, but here's some reading if you'd like to learn more:
Dawkins, Richard. (1976) "The Selfish Gene" http://amzn.to/2Dhd257
Fisher, R. A. (1930). "The Genetical Theory of Natural Selection" http://www.worldcat.org/oclc/880368061
Haldane, J.B.S. (1932). "The Causes of Evolution." London: Longmans, Green & Co.
Hamilton, W. D. (1963). "The evolution of altruistic behavior." The American Naturalist, 97(896), 354-356.
Hamilton, W. D. (1964). "The genetical evolution of social behaviour I." Journal of Theoretical Biology, 7(1), 1-16.
Twitter: @okaytobesmart @DrJoeHanson
It's Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Stephanie Keep
Producer/editor/animator: Andrew Orsak
Producer: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
Music via APM
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