How Do People Develop a Stutter?

Kings, scientists, and musicians alike have all been known to stutter. It can make speaking in front of crowds even more nerve-wracking, but is anxiety the root cause? Spoiler: probably not. Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon:   / scishow   ---------- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- Looking for SciShow elsewhere on the internet? Facebook:   / scishow   Twitter:   / scishow   Tumblr:   / scishow   Instagram:   / thescishow   ---------- Sources: http://mentalfloss.com/article/19503/... http://www.telegraph.co.uk/culture/fi... http://www.asha.org/PRPSpecificTopic.... http://www.asha.org/public/speech/dis... http://www.mayoclinic.org/diseases-co... http://www.apa.org/monitor/2014/07-08... http://jshd.pubs.asha.org/article.asp... http://www.sciencedirect.com/science/... https://jneurodevdisorders.biomedcent... http://www.webmd.com/children/news/20... https://academic.oup.com/brain/articl... https://www.ncbi.nlm.nih.gov/pmc/arti... http://www.sciencedirect.com/science/... https://www.ncbi.nlm.nih.gov/pubmed/1... http://www.tandfonline.com/doi/abs/10... http://pediatrics.aappublications.org... ---------- Images: https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi... https://commons.wikimedia.org/wiki/Fi...