The scientific study of kissing is "philematology" Follow Michael Stevens: http://www.twitter.com/tweetsauce Sources and links to learn more: Kissing facts: http://www.psychologytoday.com/blog/let-their-words-do-the-talking/201212/odd-facts-about-kissing Longest kiss: http://www.guinnessworldrecords.com/records-1/longest-kiss/ general info on kissing: http://anthropology.net/2007/03/09/why-do-we-kiss/ http://intro2psych.wordpress.com/2009/05/13/the-evolution-of-a-kiss/ http://en.wikipedia.org/wiki/Kiss birds kissing ("billing"): http://en.wikipedia.org/wiki/Beak#Billing http://en.wikipedia.org/wiki/Kiss kiss researcher interview [video]: https://www.youtube.com/watch?v=mun5nXXy6II pac man's shape: http://pacmanmuseum.com/history/Toru-Iwatani.php premastication: http://en.wikipedia.org/wiki/Premastication http://en.wikipedia.org/wiki/Courtship_feeding Alicia Silverstone premastication video: http://youtu.be/c6tEKLT5G2M history of baby food: http://www.foodtimeline.org/foodbaby.html old baby food instructions: http://digital.lib.msu.edu/projects/cookbooks/display.cfm?ID=ldnw&PageNum=437 infant vision: http://www.aoa.org/x9420.xml Pareidolia: http://en.wikipedia.org/wiki/Pareidolia Being watched: http://www.psychologytoday.com/blog/the-narcissus-in-all-us/201102/how-you-know-eyes-are-watching-you Scopophobia: http://en.wikipedia.org/wiki/Scopophobia Gaze papers: http://www.sciencedirect.com/science/article/pii/S0960982213003321 http://www.ncbi.nlm.nih.gov/pubmed/11322803 http://www.ncbi.nlm.nih.gov/pubmed/10827445 psychic staring effect: http://en.wikipedia.org/wiki/Psychic_staring_effect Harry Harlow [video]: http://www.youtube.com/watch?v=OrNBEhzjg8I Harry Harlow links: http://en.wikipedia.org/wiki/Harry_Harlow http://en.wikipedia.org/wiki/Pit_of_despair http://bit.ly/16kj1Sw Hess ducklings: http://www.muskingum.edu/~psych/psycweb/history/hess.htm imprinting: http://www.encyclopedia.com/topic/imprinting.aspx Attachment links: (TEXT BOOK scans) http://bit.ly/16kj1Sw http://psychology4a.com/attach%203.htm http://www.ibam.com/pubs/jbam/articles/vol12/no2/3%20-%20Baker%20and%20Carson.pdf description of puppy experiment: http://bit.ly/13K6XWr puppy experiment in Guy Murchie's book: http://bit.ly/11U5ih7 acceptance of uncertainty: http://www.clearlycultural.com/geert-hofstede-cultural-dimensions/uncertainty-avoidance-index/ http://en.wikipedia.org/wiki/Hofstede's_cultural_dimensions_theory ***************** music by: http://www.youtube.com/JakeChudnow Vsauce on facebook: http://www.Facebook.com/VsauceGaming Euronews Knowledge channel: http://bit.ly/10JFu6L