Try Dashlane Premium free on your first device: http://dashlane.com/scishowpsych. Use the coupon code ‘scishowpsych’ to get 10% off Dashlane Premium. #dashlane We used to think having a distinct left and right brain was something unique to humans. But brain lateralization has now been found in everything from chickens to spiders! Does this change our theories for why some brains work that way? Hosted by: Anthony Brown ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at https://www.scishowtangents.org ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Matt Curls, Sam Buck, Christopher R Boucher, Avi Yashchin, Adam Brainard, Greg, Alex Hackman, Sam Lutfi, D.A. Noe, Piya Shedden, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://www.mdpi.com/2073-8994/7/4/2181/htm https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3859130/ https://www.frontiersin.org/articles/10.3389/fpsyg.2014.00820/full https://www.ncbi.nlm.nih.gov/pubmed/26426534 https://www.sciencedirect.com/science/article/pii/S0166432807004986 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810119/pdf/15801592.pdf https://www.sciencedirect.com/science/article/pii/S016643281000714X https://onlinelibrary.wiley.com/doi/abs/10.1002/hbm.20523 https://www.ncbi.nlm.nih.gov/pubmed/26426534 https://www.sciencedirect.com/science/article/pii/S0010945219300036 https://www.researchgate.net/profile/Nicole_Van_Rootselaar/publication/326455980_Sensorimotor_lateralization_scaffolds_cognitive_specialization/links/5ba95b6a45851574f7e3f63b/Sensorimotor-lateralization-scaffolds-cognitive-specialization.pdf https://link.springer.com/protocol/10.1007/978-1-4939-6725-4_5 https://www.cell.com/neuron/fulltext/S0896-6273(17)30153-8# https://link.springer.com/article/10.1007/BF02557586 https://onlinelibrary.wiley.com/doi/abs/10.1111/j.2044-8295.1970.tb01274.x https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3606080/ https://www.ncbi.nlm.nih.gov/pubmed/7950307 IMAGE SOURCES: https://www.istockphoto.com/photo/spider-on-the-web-in-the-sunshine-gm625756668-110258201 https://www.videoblocks.com/video/woman-talking-closeup-on-mouth-super-slow-motion-shot-at-240fps-ttudeph https://www.videoblocks.com/video/portrait-of-happy-elderly-man-painting-in-a-public-square-in-madrid-spain-and-looking-at-camera-creative-spanish-artist-drawing-with-pencil-on-the-street-and-smiling-stbwdsaysjxashb2u https://www.videoblocks.com/video/temple-monkey-eating-angkor-wat-cambodia-noejbryklijuu7vvg https://www.videoblocks.com/video/clever-monkey-snatches-food-from-girls-hands-niyojfokxik4894tk https://www.videoblocks.com/video/monkeys-eating-fruit-on-ledge-kb6bymk https://www.istockphoto.com/photo/baby-plays-with-toys-gm184364803-17247349 https://www.videoblocks.com/video/two-little-boys-plays-baseball-at-the-meadow-in-park-shmd29yqpzjgspwr7h https://www.istockphoto.com/photo/an-x-ray-of-the-human-brain-on-a-black-background-gm184983624-18457506 https://www.istockphoto.com/photo/neuron-cell-network-gm622767436-109049101 https://www.videoblocks.com/video/hen-with-chickens-walking-in-yard-of-farm-brqcmygfzj6wi8ewi https://www.videoblocks.com/video/little-asian-girl-playing-with-rubiks-cube-on-the-bed-ueraqsr https://www.istockphoto.com/vector/barfing-emoji-icon-gm870241450-145002597 https://www.videoblocks.com/video/red-wild-strawberry-4uicqioogijqainps https://www.istockphoto.com/photo/brain-left-and-right-creativity-functions-sketch-concept-gm1044908342-279655851 https://www.istockphoto.com/photo/neurons-with-myelin-sheaths-produced-by-oligodendrocytes-gm1134932102-301750415