You've probably seen the pyramidal diagram of Maslow’s hierarchy of needs. It's straightforward enough but, it might be a bit too subjective to really measure human needs.

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Sources:
http://psychclassics.yorku.ca/Maslow/...
http://webspace.ship.edu/cgboer/maslo...
http://journals.lww.com/psychosomatic...
http://www.sciencedirect.com/science/...
https://www.theatlantic.com/health/ar...
http://www.apa.org/pubs/journals/rele...
http://www.sciencedirect.com/science/...
http://www.sciencedirect.com/science/...
https://www.regent.edu/acad/global/pu...

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