Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! *** Why do people sometimes do bad things just because someone else told them to? And what does the term Groupthink mean? In today's episode of Crash Course Psychology, Hank talks about the ideas of Social Influence and how it can affect our decisions to act or to not act. If you are currently in need of help: http://www.mentalhealth.gov/get-help/ -- Table of Contents: Milgram Experiment 0:31 Automatic Mimicry 3:29 Solomon Asch 4:08 Normative Social Influence 5:31 Social Facilitation 5:59 Social Loafing 6:19 Deindividuation, Group Polarization, & Groupthink 6:50 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse