Sex is complicated for different reasons in different cultures. But, it's the entire purpose of life, so there's no reason to blush. In this episode of Crash Course Psychology, Hank talks about Kinsey, Masters and Johnson, Sexuality, Gender Identity, and Hormones, and even looks into the idea of why we have sex. There's a lot to go through here. Want more videos about psychology? Check out our sister channel SciShow Psych at null! -- Chapters: Introduction: Alfred Kinsey 00:00 Biological Sex & Gender Identity 2:01 Masters & Johnson 3:07 The Four-Stage Sexual Response Cycle 3:48 Sex Hormones 5:31 Social & Cultural Factors of Sexual Desire 7:11 Sexual Orientation 8:51 Why People Have Sex 10:17 Review & Credits 10:43 -- Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: null