Move aside extroverts. In this episode — which aired last year — we explore personality types and whether they are set in stone. This episode was produced by Danielle Hewitt, edited by Jenny Lawton, fact-checked by Melissa Hirsch, engineered by Patrick Boyd and hosted by Jonquilyn Hill. Photo by We Are/Getty Images. If you have a question, give us a call at 1-800-618-8545 or email askvox@vox.com. Listen to Explain It to Me ad-free by becoming a Vox Member: vox.com/members. [http://vox.com/members.] Learn more about your ad choices. Visit podcastchoices.com/adchoices [https://podcastchoices.com/adchoices]